An airport under a seven-storey rock
In 1947 George Van Tassel left aviation — he had worked as an aircraft mechanic and a test flight inspector — and moved his wife Eva and their three daughters into the Mojave Desert at Giant Rock, near Landers, California. The family leased four square miles from the Bureau of Land Management, reopened the airstrip as the Giant Rock Interplanetary Airport, and ran a roadside restaurant called the Come On Inn.
From 1953 Van Tassel held weekly meditation sessions in a chamber of about 400 square feet dug out beneath the boulder. He described those sessions as channelling, and said the voices reaching him through them belonged to beings aboard ships.
The first convention came before the landing
The order of events here is usually told backwards, and it matters. The first Giant Rock Interplanetary Spacecraft Convention was held on 4 April 1953. Van Tassel's account of being taken aboard a craft is dated to August of that year — four months after the convention, not before it. He said a ship landed near the rock at two in the morning, and that a being he called Solganda took him inside and gave him the design for a machine.
The conventions then ran annually until 1977, drawing contactees, lecturers and the merely curious out to an airstrip in open desert. Accounts of the peak year, 1959, differ: the figure given is sometimes as high as 10,000 attendees and sometimes 11,000, and no gate receipts have been published that would settle it. They were, by the account of architectural historian Daniel Paul, family events — a diversion, with entertainment laid on, including a child playing Beethoven on a piano beside the boulder.
What the machine was supposed to do
The Integratron stands at 2477 Belfield Boulevard in Landers: a cupola 38 feet tall and 55 feet in diameter, credited to Van Tassel and Howard P. Hess. Van Tassel said it was built entirely of non-ferromagnetic materials — an all-wood dome on sixteen glued and laminated spines, with roughly a ton of concrete at its apex and no ferrous metal anywhere in the shell. He also said it stood over a geomagnetic anomaly.
The design he described drew on the Multiple Wave Oscillator of Georges Lakhovsky, pairing a high-voltage Tesla coil with a split-ring resonator to produce very wide-band electromagnetic fields. The premise was that every biological cell has a resonant electromagnetic frequency, and that a field containing all of them would recharge whatever was standing inside the dome. Van Tassel claimed three functions for the finished machine: cellular rejuvenation, anti-gravity, and time travel.
None of the three was ever demonstrated. The machine was never finished.
Money, a ministry, and a newsletter
Construction began in 1957 and continued for about two decades. It was paid for by donations, solicited through a newsletter called The Proceedings and through Van Tassel's speaking engagements, and topped up by the annual conventions. He ran the operation through the Ministry of Universal Wisdom, a non-sectarian non-profit, and had himself ordained to lead it.
One donor is named repeatedly in accounts of the project: Howard Hughes, described as a large contributor. The claim appears in the stewards' own history of the building and in reference accounts drawn from it; no cheque, ledger entry or Hughes-side record has been produced to confirm it.
The FBI opened a file, and then closed it
In May 1954 a complaint about the group reached the FBI, sent on Los Angeles Times letterhead and objecting to the chanting at Giant Rock. A file was opened. Daniel Paul, who spent years on the building's history, has said the Bureau's work went nowhere and that agents concluded Van Tassel and the people around him were harmless.
The status of that file is itself contested, and in a small way it is the cleanest example of how the whole story works. The Integratron's own published timeline states flatly that the FBI file remains classified. Other accounts describe it as released, with redactions, and a self-published 2020 volume claims to reproduce it — from a copy its own listing concedes has pages missing and pages blurred. The same document is simultaneously described as sealed and as sitting in print.
The part that became a conspiracy
Van Tassel died suddenly on 9 February 1978, aged 67, having worked on the device until the end. His epitaph reads: "Birth through induction, death through short circuit."
According to the timeline maintained by the building's present stewards, his proprietary electronic equipment, his notes and his diagrams disappeared shortly after his death and have never resurfaced. That sentence is the entire foundation of the suppression claim — that the machine was taken because it worked.
What supports it is an absence. No inventory of what went missing has been published. No police report has surfaced. No one has been named as having removed anything, and no agency has been shown to have taken an interest in the hardware before or after he died. Set against the FBI's own recorded conclusion that the group was of no consequence, the suppression reading asks the record to carry considerably more than it holds.
Where the papers are now
The dome passed through several owners and fell into disrepair; a proposal to turn it into a disco was floated and dropped. In 2000 three sisters — Joanne, Nancy and Patty Karl — bought it, and it has operated since as a destination, with sound baths played on twenty-two quartz bowls. It was added to the National Register of Historic Places on 23 April 2018, reference number 100002317. The stewards' own timeline dates the listing to 2019.
Then, on 1 September 2026, the Huntington Library in San Marino announced that it had acquired an archive of Van Tassel material from Donald and Dayle McKinney of Landers, catalogued as the McKinney Collection of George W. Van Tassel Papers. It is the Huntington's first major acquisition centred on ufology. The holdings run from the 1910s to the 1990s and include an architectural model and the original blueprints of the Integratron, nearly 630 photographs, negatives and slides, more than 250 audio recordings — among them Van Tassel channelling what he described as beings from beyond — and 8mm film of the conventions. The collection was traced through Jack Wagner, guided by Daniel Paul. The Huntington's curator of photographs and visual culture, Erin Chase, said the institution had not been looking for it and decided after seeing it that it had to come there.
That is a different kind of test than the one Van Tassel proposed. The blueprints can now be read in a reading room, and what they describe can be checked against what was built — which is more than was possible while the drawings were in a shed in the desert.