The Kanowa research station was located in Australia. It was controlled by Ramón Salamander, but was controlled by Theodore Benik when Salamander was away.
An underground shelter was built under it by Salamander and Giles Kent, with several scientists being put in the shelter to cause "natural" disasters.
When Kent was exposed by the Second Doctor, he went into a tunnel system located underneath the station, planning to destroy the station with a explosive device located in the tunnels. After he was shot by Salamander, he activated the explosive device, but the ensuring explosion only damaged the research station. (TV: The Enemy of the World)
Behind the scenes
Kanowa is possibly meant to be the region of Kanowna, located in Western Australia, not very far away from Cape Arid, other other Australian location featured in the serial.