Kunia | Images of Old Hawaiʻi

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)

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Munitions_train-heading_out_of_Lualualei-1966

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.)

Most recently, a new 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.)

The image shows the entrance to “The Hole.” In addition, I have included other related images in a folder of like name in the Photos section on my Facebook and Google+ pages.

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