We charged up the 20-minute approach to a wall of columnar basalt.

Instead, the vast majority are columnar basalt cracks that take gear.

That mass of columnar basalt was occupied and held sacred in Roman times, and was dedicated to Apollo.

Then we ride through a cedar forest up a long ascent, until we come to cliffs of columnar basalt.

While the main area features volcanic tuff, the Lower Gorge hosts rows of trad and sport routes on columnar basalt.

Then one sees the wet walls of limestone and the curiously-formed isolated pieces of rock that almost suggest columnar basalt.

Cliffs of columnar basalt.

I think the best climbs would be on columnar basalt, as a lot of Mars is pretty dusty; either that or mountaineering.

Year-round sport and trad climbing on dark columnar basalt cliffs ranging in difficulty from 5.9 to 5.13.

He put up his first new climb on the columnar basalt of Frenchman's Coulee when he was 16, three years after he started climbing.

Tim Garland climbs the columnar basalt cracks of Lethal Dose (5.11a R) in Smith Rock's Lower Gorge.

It is only in some ravines, that we find columnar basalts, somewhat curved, and above them very recent breccia, resembling volcanic tufa.