Case file · Secret facility (alleged)
Harold E. Holt naval communication station
A very-low-frequency transmitter commissioned in 1967 at North West Cape near Exmouth, Western Australia, to talk to US and allied submarines, named after the prime minister who vanished that year.
1967 CE · -21.82, 114.17 · status: official
The account
Its towers are among the tallest structures in the southern hemisphere. Secrecy around its role in nuclear deterrence made it, with Pine Gap and Nurrungar, a focus of anti-base protests and conspiracy stories.