St Michaels Cave (Avalon Beach)
| St Michaels Cave | |
|---|---|
| Location | Avalon Beach, New South Wales, Australia |
| Coordinates | 33°37′44.83″S 151°20′21.23″E / 33.6291194°S 151.3392306°E |
| Depth | 15 metres |
| Length | 110 metres |
| Geology | Dolerite & Narrabeen Group |
| Hazards | falling rocks |
| Access | not allowed |
| Coordinates | 33°37′45″S 151°20′21″E / 33.62912°S 151.33923°E |
|---|---|
| Managing authorities | |
St Michaels Cave is situated in the Sydney suburb of Avalon Beach. This sea-side cave is around 110 metres long, 15 metres high and 10 metres wide. The original colonial owner was a Reverend John Therry, who planned to deliver lectures within the cave and build a church above it. The cave was formed by the erosion of a jurassic dyke through triassic sedimentary rocks. The cave is known to be a breeding site for Common bent-wing bats and Large-eared pied bats.