"Your faith in the salt crust must be pretty good! "
The trick is not to just plonk it down. Quite often it is a thin crust, in this case very solid. A gentle touch then a good thump or two, to see if you are going to break through.
Part of a long ferry from Mt Isa to Melbourne, via Kalgoorlie!
See: S 29 50 58 E122 08 10 on Google Earth.