Gorge walking is all about following a river or small stream not just from the banks but from actually in the water the terrain varies from water just a foot deep to sections which will need to be swum through in order to reach the next stage the occasional waterfall is par for the course and these can only be tackled one way with a jump after a full safety briefing the instructors will talk everyone through the route but nothing can prepare you for the rush of actually wetsuiting up