Columnar-jointed basaltic lava flow at the Narrows of the Grand Can...

Columnar-jointed basaltic lava flow at the Narrows of the Grand Can...

Detailed Description

View across The Narrows of the Grand Canyon of the Yellowstone. The lowest part of the cliff is composed of river-deposited gravel. Above that is a single columnar-jointed basalt flow overlain by glacial till.

Details

Image Dimensions: 500 x 800

Date Taken: