There has been a wave of articles over the last few weeks out on the geoblogosphere on columnar jointing in lavas – with many, many great images of columns seen aroundthe world. I thought I’d jump in ...

Huge, dark pillars of stone rise from the dirt. They are perfectly hexagonal. They stand shoulder-to-shoulder like a ...

Columnar jointing is a common feature in many basaltic lava flows and intrusions around the world. Spectacular arrangements of columns have fascinated observers for centuries, and numerous hypotheses ...

Visitors to the coast of Northern Ireland have always marveled at the so-called Giant’s Causeway — a field of some 40,000 interlocking basalt columns arranged in a tidy hexagonal pattern. German ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Michael Poland, geophysicist with the ...