Helderberg 1 Cave
By Peter Swart, May 2007
Cave 1 is formed by a rift in the quartzitic sandstone of Porcupine Buttress. The entrance to the cave is amongst shattered boulders at the base of the cliff and about 1m by 1m. The crumbling rocky floor slopes down from the entrance to the edge of a 10m drop. Darryl Holland took a small team to explore the cave. They used a ladder and descended to a depth of 20m and found themselves in a narrow, high passage. They did not find any extensions beyond this. The cave was not surveyed.