[SunkenCiv]

(reminds me of the Giant's Causeway)

This spectacular columnar joint pattern in lava exposed in Alaska's Suemez Island formed when the lava flowed next to a glacier about 700,000 years ago. CREDIT: Susan Karl, U.S. Geological Survey

[JimSEA]

Textbook worthy photo!

[skinkinthegrass]

that's so COOL.. :-D

[blam]

"The maar is about 13,800 years old, Baichtal said."

That's about the same time a comet hit, eh?

[Ernest_at_the_Beach]

Thanks.

[csvset]

Basalt flows is neat stuff. Devil’s Postpile in California has similar type flows.

[Bigg Red]

How beautiful! I’d love to see it in person.