Is located on the western side of Adrenalin Creek and 500m east of Fire Trail No. 6 off Sunnyside Ridge Road. Named by Chris Sterling and described on Michael Keats walk report on the 27th November 2012 as,"we entered a huge and cavernous eroded area. Slot is not quite the right word. A cavern is best description. The mouth was tapered from both the top and bottom giving a rough pinched diamond shape to the aperture. The cavern widens inside and the floor rises rapidly towards the back, some 40m in from the opening."