Images of Old Hawaiʻi

  • Home
  • About
  • Categories
    • Ali’i / Chiefs / Governance
    • American Protestant Mission
    • Buildings
    • Collections
    • Economy
    • Missionaries / Churches / Religious Buildings
    • General
    • Hawaiian Traditions
    • Other Summaries
    • Mayflower Summaries
    • Mayflower Full Summaries
    • Military
    • Place Names
    • Prominent People
    • Schools
    • Sailing, Shipping & Shipwrecks
    • Voyage of the Thaddeus
  • Collections
  • Contact
  • Follow

May 26, 2020 by Peter T Young 2 Comments

The Hole

Fear of a repeat-attack on Pearl Harbor prompted the Army and Navy to plan a less vulnerable, bomb-proof complex, designed and built as an underground open bay with floor space for an aircraft assembly and repair plant.

Construction on the $23-million underground complex began in 1942 and was completed in late-1944. It was a free-standing structure that was later covered with 5-feet of soil for pineapple cultivation.

It was in immediate proximity to Wheeler Army Airfield and Waieli Gulch Field.  (While Wheeler remains an active military facility, Waieli Gulch Field only lasted through the war – however, remnants of the runway can still be seen.)

The secret underground facility was constructed as an open bay area, without interior cement blocks. The outer walls are composed of reinforced concrete and dirt.

The entrance was placed in the steep side of the gulch to obscure visibility; access to the structure was by means of a quarter-mile-long tunnel.  The access was built on a curve with a 90-degree bend, intended to provide protection for the entrance to the bunker, at the end of which were elevators for the different levels.

It was nicknamed the “Kunia Tunnel” or simply, “The Hole.”

It is not a true tunnel; rather, a freestanding 3-story structure with approximately 250,000 square feet in overall size with a total of three floors.  220,000-square feet were available for assembly of folded winged aircraft (each floor was the equivalent of a football field,) with 30,000-square feet used for power generation and air conditioning.

The main shop was designed to provide space for three B-17 planes, two without wings and one with wings and was later modified to accommodate larger bombers.  The work area was surrounded by smaller repair shops and storage rooms.  To light the facility, it took almost 5,000 fluorescent tubes.

Two elevators serviced the field station – one capable of accommodating four 2 1/2-ton trucks or “an average size four-room cottage.”  For passenger service, another elevator was provided with a carrying capacity of 20-people.

It had a cafeteria that could turn out 6,000-meals a day. Huge air conditioning and ventilating systems ensured a constant flow of fresh air drawn from the open countryside.

One World War II soldier described the tunnel as “the great underground cavern”. The soldier said the tunnel was “equipped with every modern facility and the three floors of the huge bombproof structure were found to be ideal for our purpose”.

Aircraft including the B-24s, B-17s, B-26s bombers and other types were serviced in the bunker; these bombers were used in major bombing operations in the Mariana Islands, the Philippines, Japan and Okinawa.  There is no historical evidence to suggest the field station was ever used for aircraft assembly.

After the danger of further enemy attack passed, this facility housed the Engineers’ extremely important map and chart reproduction services.

It provided personnel, information and communications support to the Pacific Theater and National warfare requirements; working with photographs supplied by Army and Navy fliers, they produced maps and aerial photographic mosaics.

These first “Kunians” were shift workers, working three, 8-hour shifts, making maps. They produced a staggering number of maps; in one month, more than 2,700,000-maps were printed and used by Allied forces in the war in the Pacific.

At the end of WWII, the facility was turned over to the Air Force.  Then, in 1953, the US Navy officially took over the facility and used it for ammunition and torpedo storage; they then renovated it and converted the building into a secret security structure.

With renovations completed in the early-1960s, the Commander in Chief of the Naval Pacific Forces used Kunia as a command center.  Further renovations to strengthen the structure against chemical and radioactive attacks were completed in the mid-1960s. The Fleet Operations Center was moved to another location in 1976, and the Kunia base was turned over to the General Services Agency.

January 1980, it became Field Station Kunia under Army control and later renamed the Kunia Regional Security Operations Center (KRSOC) to reflect the change to a more “joint” mission, with Army, Navy, Air Force and Marines assigned to the unit.  It also hosted the other members of the “Five Eyes” (US, Great Britain, Canada, Australia and New Zealand.)

A state-of-the-art Hawaiʻi Regional Security Operations Center (HRSOC) was constructed near Wahiawa, which replaced the Kunia Regional Security Operations Center (KRSOC).

It is now known as NSA/CSS Hawaiʻi, an intelligence receiving hub for the National Security Agency; much of what goes on at Kunia is top secret.   (Lots of information from the Army, Navy and Marines websites.)

Follow Peter T Young on Facebook 

Follow Peter T Young on Google+ 

Follow Peter T Young on LinkedIn  

Follow Peter T Young on Blogger

© 2020 Hoʻokuleana LLC

The Hole-Kunia - entrance
Entrance to Underground NSA-Naval Security Group Kunia Regional Security Operations Center
The Hole - Kunia - entrance
Entrance to The Hole - Kunia
Entrance to The Hole just above helipad - Kunia
Entrance to The Kunia Tunnel
Entrance-Underground NSA-Naval Security Group Kunia Regional Security Operations Center
Entrance-Underground_NSA-Naval Security Group Kunia Regional Security Operations Center
Kunia Google Earth
Kunia NSGA Hawaii-patch
Kunia RSOC-coin
Kunia-(ronartis)
NSA-CSS Hawaii Regional Security Operations Center-that replaced the Elephant Cage-GoogleEarth
The_Hole - Kunia - entrance
Uses over The Hole - Kunia
Waiele Gulch Airfield under construction-July_9,_1942
Waieli and Wheeler_1948
Waieli Gulch runway
Waieli_Gulch runway
Waieli_runway_construction_1942
Wahiawa_Kipapa_area-map
B-17
B-24
B-26
Wheeler and Waieli 2004

Filed Under: Military Tagged With: Hawaii, Oahu, Wheeler Army Airfield, Kunia, Kunia Tunnel, Waieli Gulch Field

April 15, 2020 by Peter T Young 2 Comments

Elephant Cage

It doesn’t exist anymore (and was relatively short-lived,) and contrary to its nickname, it didn’t house pachyderms. It was actually an antenna array, constructed near Wahiawa, Oʻahu, and used during the Cold War.

More formally known as the AN/FRD-10 Circularly Disposed Antenna Array (CDAA) at NCTAMS (Facility 314,) it was a part of the efforts to gather foreign intelligence information.

Along with fourteen other FRD-10 CDAAs worldwide, it was a part of the Naval Security Group’s Classic Bullseye network, a program for strategic signals intelligence (SIGINT) collection and transmitter locating.

This technology was a radical improvement in the performance of high-frequency direction finding. Its design, with uniformly spaced outside the rings of reflector screens, was able to intercept and detect the direction of high-frequency radio transmissions covering 360 degrees. (NPS)

Early work on CDAA systems had been undertaken by the German navy’s signal intelligence research and development center early in World War II.

At that time, it was given the name, Wullenweber, or Wullenweber Antenna (named after Jürgen Wullenweber who was the mayor of Lubeck, Germany from 1533 to 1537. He was an opponent of injustice and a supporter of the Protestant cause who became a legendary figure.)

In addition to the nickname noted above, it was referenced by some as a “Dinosaur Cage; “ the names came from the nature of its construction.

The structure had concentric circles of posts and wires; the innermost ring was an antenna reflector screen made up of 80-vertical wood poles 94-feet high that were spaced evenly about 28′-6″ apart in a circle about 732-feet in diameter.

Moving outward, another circle of 40-poles, 58-feet high, spaced evenly a little over 61-feet apart formed a ring 776-feet in diameter. A third ring, 847-feet in diameter consisted of 120 wood poles, 25-feet in height, spaced 22-feet apart. The outer-most ring had 120-poles, 22-feet in height forming a circle with an 873-foot diameter.

With poles, wire and netting, it looked like a cage to control some big animals, thus its nicknames.

But it served a greater purpose; throughout the post-World War II years, advancing technology helped to shift the means of intelligence gathering by the US, from networks of agents operating on the ground in foreign lands to electronic and over flying systems that could gather data from much greater distances.

Remember, in the 1950s technology was still in its relative infancy; it was only in 1957 that the Soviets launched the first earth-orbiting satellite (Sputnik I.)

The Wahiawa facility was positioned to pick up all radio signals from Asia and the Pacific region, but the antenna was so sensitive that it could also pick up signals from around the world. Its sub-antennas in a complete circle also let operators inside know the direction from which the signal was coming.

Although human intelligence gathering efforts continued, technology played a greater role in the collection of information. The 1950s saw a greater capability of aerial reconnaissance in intercepting voice, radiotelephone, facsimile or Morse code communication, either transmitted in the clear or encrypted.

In addition, electronics were beginning to be able to pick up non-communications signals, such as the releases from foreign radar, and signals sent back from missiles or satellites that indicate performance and operation during a flight.

Supporting this aerial surveillance, during the 1950s and 1960s, work on ways of improving the capabilities and performance of high-frequency direction-finding equipment was improving – part of that research was the refinement of circular arrays, the CDAAs.

Besides the Wahiawa facility (built between 1962 and 1964,) CDAA were operational at Agana, Guam; Homestead AFB, FL; Imperial Beach, CA; Marietta, WA; Howard AFB, Panama Canal Zone; Sebana Seca, PR; Skaggs Island, CA; Sugar Grove, WV; Winter Harbor, ME; Canada: CFB Gander, NF; CFB Masset, BC; Europe: Brawdy, UK; Edzell, UK; Keflavik, Iceland; NAS Rota, Spain; and Asia: Hanza, Japan.

The worldwide network, known collectively as “Iron Horse”, could detect and locate Soviet submarines and other high frequency communications almost anywhere on the planet.

The system was wound down at the end of the Cold War; in the mid-1990s, the network of facilities were started to be torn down. On October 4, 1998, the Wahiawa facility ceased operations and was dismantled in 2005.

In September 2007, it was completely removed to make way for new buildings of the Hawaiʻi Regional Special Operations Center (HRSOC;) the military relocated its state-of-the-art intelligence and data gathering and analysis facility, related to security operations in the Pacific, out to the Kunia Tunnel.

Follow Peter T Young on Facebook 

Follow Peter T Young on Google+ 

Follow Peter T Young on LinkedIn  

Follow Peter T Young on Blogger

© 2020 Hoʻokuleana LLC

'The Elephant Cage'
Wahiawa-CDAA-(HABS-NPS)
Wahiawa CDAA (HABS NPS)
Wahiawa CDAA (HABS_NPS)
Wahiawa CDAA (HABS-NPS)
Wahiawa CDAA-(HABS_NPS)
Wahiawa-CDAA (HABS_NPS)
Wahiawa-CDAA (HABS-NPS)
Wahiawa CDAA_(HABS-NPS)
Wahiawa_CDAA (HABS-NPS)
Wahiawa_CDAA-(HABS_NPS)
Wahiawa_CDAA-(HABS-NPS)
Wahiawa_CDAA_(HABS-NPS)
Wahiawa_CDAA-2006
NSA-CSS Hawaii Regional Security Operations Center-that replaced the Elephant Cage-GoogleEarth
Wahiawa_CDAA-2007
The Elephant Cage
The_Elephant_Cage
Wahiawa-CDAA-2003
Wahiawa_CDAA_(HABS-NPS)-(HSA)-1969
Wahiawa-CDAA-2006
Wahiawa_CDAA-2003
Wahiawa-CDAA-(HABS-NPS)-grading plan
Wahiawa-CDAA-(HABS-NPS)-location_Map
Wullenweber-Elephant_Cage-design
Wullenweber-Elephant_Cage-layout

Filed Under: Military Tagged With: Wahiawa, Kunia Tunnel, CDAA, Elephant Cage, Wullenweber, Dinosaur Cage, Hawaii

May 2, 2016 by Peter T Young Leave a Comment

Ammo Tunnels

In ancient times, the central plateau, particularly the area called Lihue on the southwestern part of the plateau, was a center of island political power.

Even after the royal center had shifted to Waikiki during the time of chief Maʻilikukahi, this central area continued to play a role in chiefly activities, especially related to Kukaniloko, the site where chiefs came for the birth of their royal children. (Army)

As late as 1797, Kamehameha is said to have “made every arrangement to have the accouchement (birth of his successor) take place at Kūkaniloko; but the illness of Queen Keōpūolani frustrated the design”. (Fornander)

The central plateau was also a sanctuary for refugee chiefs. In 1783, the Maui chief Kahekili invaded and conquered Oahu, chasing the Oahu chief Kahahana and his wife into hiding in “the thickets of Wahiawa”.

The larger gulches of the central plateau and the gulches on the higher slopes of the Waiʻanae and Koʻolau Ranges were probably cultivated with irrigated taro. Handy writes “there are terraced areas watered by Kioea and Waikoloa (the north boundary of the Schofield Barracks cantonment) Streams. Kalena Gulch (in the Schofield West Range) had some terraces”. (army-mil)

A network of trails connected the central plateau with other parts of the island. The northern leg of the Waialua trail extended to the north shore; the southern leg reached to the rich estuaries of Puʻuloa (Pearl Harbor) on the south shore. The Kolekole trail pointed west to the crest of the Waianae Range and across to the leeward coast.

Fast forward to modern times, the first naval ammunition depot in the Islands consisted of seven above-ground magazines located on Kuahua Island, Pearl Harbor, in the vicinity of the Naval Shipyard.

Kuahua was used from 1916 until April of 1934, when it was decommissioned because of its unsafe location and limited area available for expansion. In 1929, the Navy purchased 8,184 acres of the McCandless estate at Lualualei; on May 1, 1934 the US Naval Ammunition Depot was commissioned. (Oahu Detonator)

As WW II approached, portable storage units were replaced with extensive underground rooms and tunnels for ammunition storage at many locations on Oahu. One worker commented that the Engineers had built so many tunnels, if placed end to end– the entrance would be at Koko Head, the exit at Moanalua. (ACE)

A major defense project of the mid-1930s was the construction of ammunition tunnels into the sides of Aliamanu Crater, called Aliamanu Ammunition Storage Depot (now Aliamanu Military Reservation.)

Intended for centralized storage of Army ammunition, eight tunnels were dug in 1934 and additional 35 magazines were completed in 1937. (Army)

At the onset of World War II, the Army was importing ammunition in huge quantities, requiring construction of ammunition storage facilities. Small facilities were built above ground, but the bulk of the ammunition was stored in massive underground storage facilities.

The first to be developed was in Waikakalaua Gulch just south of Wheeler Field, as well as at Kipapa Gulch.

“Tunnels driven into the almost vertical walls of the two gorges would have entrances invisible from the air. To keep out bomb fragments, passageways to the storage chambers would be dog-legged or provided with baffles.”

“The only drawbacks to these sites were lava formations and cinder pockets which would necessitate timbering or concreting considerable portions of the chambers.” (DOD; army-mil)

Waikakalaua consisted of 52 tunnels built into the hillside and used for ammunition storage. The mission of Waikakalaua was to provide ammunition storage for the Army during and after World War II. Ordnance storage tunnels and underground fuel storage tanks are reported to have been constructed between 1942 and 1945, and the installation was active until the 1950s.

This system of tunnels was the location of the primary storage for ordinance for B-17s and other bombers stationed just above at the Kipapa Army Airfield. The site was also used to store anti-tank and rifle fragmentation grenades. (army-mil)

According to Army-Navy Explosives Safety Board Abstract Number 28, tunnel #24A exploded in 1946 blowing large pieces of the concrete baffle out of the tunnel and across the gulch with such force that it destroyed a railroad track 300 feet away and caused a 20-foot depression to form above the tunnel.

Kipapa Ammunition Storage Site, located in Kipapa Gulch, was comprised of three sections. The lower unit is accessed from the south side of the Kamehameha Highway Bridge and extends south to the Kipapa Navy Ammunition Storage Area. The other two units are in the gulch to the east of Mililani Town.

Army construction during this period also included “The Hole” (now the Kunia Field Station,) a facility originally intended for airplane assembly (with a runway connection to Wheeler Field to the east.)

“The entrance appeared to lead only to a small dugout in a rolling hill, but at the end of a quarter-mile tunnel two elevators – one big enough for 20 passengers and the other able to carry four ½-ton trucks – gave access to a three-floor structure, self-sufficient even to a cafeteria that could serve 6,000 meals a day.”

“’The Hole’ was intended for plane assembly, but since it was not needed for such use, it proved ideal for the reproduction of maps and charts. Its huge air conditioning and ventilating systems provided easy control of temperature and humidity, and its fluorescent lighting furnished a flood of shadowless illumination.” (Allen; army-mil)

In October 1941, work was started to convert the storage facility in the rim of Aliamanu Crater into a joint Army-Navy command post; although not completed at the time of the Japanese attack on Pearl Harbor, the post was shortly after put into service by the island command.

To alleviate continued housing shortages in the early-1970s, the Army, Navy, and Marines developed a joint project at Āliamanu Military Reservation, once a World War II era Navy-Army command post and important ammunition storage facility.

The ammunition was moved to the Lualualei storage depot and the crater was transformed into a 2,600-unit housing development.

Other tunnel complexes were built, including Schofield Barracks, Wheeler Field, Fort Shafter and Fort Ruger. The tunnels at Wheeler Field and Fort Ruger were for ammunition storage. The tunnels at Fort Shafter included a bombproof radio station, an underground cold storage facility, an anti-aircraft command radio transmitter tunnel, and the Air Defense Command Post. (army-mil)

Follow Peter T Young on Facebook 

Follow Peter T Young on Google+ 

Follow Peter T Young on LinkedIn  

Follow Peter T Young on Blogger

© 2016 Hoʻokuleana LLC

Munitions_train-heading_out_of_Lualualei-1966
Munitions_train-heading_out_of_Lualualei-1966

Filed Under: Military Tagged With: Wheeler Army Airfield, Lualualei, Kunia, Kunia Tunnel, Kipapa, Fort Shafter, Naval Ammunition Depot, Aliamanu, Hawaii, Ammunition, Schofield Barracks, Waikakalaua, Fort Ruger

Images of Old Hawaiʻi

People, places, and events in Hawaiʻi’s past come alive through text and media in “Images of Old Hawaiʻi.” These posts are informal historic summaries presented for personal, non-commercial, and educational purposes.

Info@Hookuleana.com

Connect with Us

  • Email
  • Facebook
  • LinkedIn
  • Twitter
  • YouTube

Recent Posts

  • Kalihi
  • Hawaii and Arkansas
  • Barefoot Football
  • Arthur Akinaka
  • Food Administration
  • Lanai City Schools
  • Happy Mother’s Day!

Categories

  • American Revolution
  • General
  • Ali'i / Chiefs / Governance
  • Buildings
  • Missionaries / Churches / Religious Buildings
  • Hawaiian Traditions
  • Military
  • Place Names
  • Prominent People
  • Schools
  • Sailing, Shipping & Shipwrecks
  • Economy
  • Voyage of the Thaddeus
  • Mayflower Summaries

Tags

Albatross Al Capone Ane Keohokalole Archibald Campbell Bernice Pauahi Bishop Charles Reed Bishop Downtown Honolulu Eruption Founder's Day George Patton Great Wall of Kuakini Green Sea Turtle Hawaii Hawaii Island Hermes Hilo Holoikauaua Honolulu Isaac Davis James Robinson Kamae Kamaeokalani Kamanawa Kameeiamoku Kamehameha Schools Lalani Village Lava Flow Lelia Byrd Liliuokalani Mao Math Mauna Loa Midway Monk Seal Northwestern Hawaiian Islands Oahu Papahanaumokuakea Marine National Monument Pearl Pualani Mossman Queen Liliuokalani Thomas Jaggar Volcano Waikiki Wake Wisdom

Hoʻokuleana LLC

Hoʻokuleana LLC is a Planning and Consulting firm assisting property owners with Land Use Planning efforts, including Environmental Review, Entitlement Process, Permitting, Community Outreach, etc. We are uniquely positioned to assist you in a variety of needs.

Info@Hookuleana.com

Copyright © 2012-2024 Peter T Young, Hoʻokuleana LLC

 

Loading Comments...