Is a beautiful camping cave, surrounded by rainforest. Located in the headwaters of Penrose Gully, 1.7km north east of the Glowworm Tunnel. It is about 30m long by 9m wide by 15m high, with a perfectly level floor of tightly packed sand. In the middle of the cave floor and at its northern end, stands an obelisk, a single, 1.2m high spearhead shaped shard of grey rock that looks completely like someone had carved it and installed it here on purpose. Named by Yuri Bolotin and Brian Fox on a bush walk 23 December 2016.