Top Of Down Under

Nimbi Nimbi Sinkhole (6x1)

Air date: Mar 01, 2017

Series 6 kicks off with the challenge to be the first to drive to a sacred aboriginal site - the Nimbi Nimbi Sinkhole (Numby Numby). Only ever viewed from helicopters, this little known geological phenomenon is the destination, but it won't be reached as easily as first planned!