Well before the
Maralinga area was set out, a complete survey of the area had to be undertaken by surveyors, in order to get an accurate survey of the area that they would be working in. In order to get accurate survey data, a series of Trig points were established from which they would then work out from known points of elevation and latitude and longitude. This trip point on on the
Emu Road and is passed by all vehicles using this track.