Ngilgi Cave, previously known as Yallingup Cave, is a karst cave to the northeast of Yallingup, in the southwest of Western Australia.
In many sections of the cave a red layer of soil can be seen; this is called paleosol.
Wikipedia https://en.wikipedia.org/wiki/Ngilgi_Cave
Official Website https://www.margaretriverattractions.com/caves/ngilgi-cave/
Phone +61 8 9757 7411
Coordinates -33°38'32.713" N 115°2'4.037" E