Some of the holes are actually formed during a lava flow as part of the pyroclastic process. Because they cooled relatively quickly, the holes are formed from releases of CO2 in most cases, but also other dissolved gasses and water.
Except Texas holey rock itself doesn't come from the beaches of Cali![]()
I would tell you, But I know, that you know what they are now!! Ha ha!
Many holes in beach rocks are formed by bivalves secreting acid into them to make little bivalve houses.
Pap, next time I see you in chat, I'm punching you in the bio balls.
:frog::thud:
cool rocks! Wish i had some of those!