The slab, measuring 24.1 by 20.1 centimeters, is made from locally sourced vesicular basalt, matching the geological composition of rocks in the area. The slab contains 60 characters carved on its ...

Runners, bicyclists and walkers in Columbia Park have probably noticed a couple 1,500-pound basalt slabs installed along the path in recent days. Those are part of one local teacher’s decades-long ...

Scientists have proposed mass melting as a new force behind volcanic activity in the Columbia River region. Like a stream of air shooting out of an airplane's broken window to relieve cabin pressure, ...