They built up during ice ages, when the sea level dropped dramatically, leaving the caves dry. For Peter Swart, professor of marine geology and geophysics at the University of Miami, speleothems ...

It’s a peculiar sea cave which formed slowly over thousands of years. Alongside other similar geological formations in Cape Perpetua, Thor’s Well has long drawn spectators to this corner of ...

Reaching up to 300m, Tasmania's sea ... Geological discoveries made here suggest Tasmania and Antarctica were once parts of the same land mass. Dive category: This is a potentially hazardous cave ...