The surrounding waters to the mean high-water mark are within Wilsons Promontory Marine National Park.

[1] It is part of the Wilsons Promontory Islands Important Bird Area, identified as such by BirdLife International because of its importance for breeding seabirds.

[2] It is partially hollowed out by ancient waves, creating a cave 130 metres (430 ft) wide and 60 metres (200 ft) tall.

[3] Only 9 people have ventured into the cavern, finding "old cannon balls left by passing ships practicing their aim"[citation needed].

Adventurers had to land on the top of the rock by helicopter, then they shimmied down ropes to gain entrance to the cave.