Progress can be slow but adds up

Progress can be slow but adds up...

Detailed Description

Geologist examines spatter and ash deposits within Hawai‘i Volcanoes National Park along Kīlauea's southwest rift zone. New understanding of the age of the ash deposits, based on years of careful research, has prompted an important revision of the ages of these surface lava flows. USGS photograph by Tim Orr, November 6, 2015.


Image Dimensions: 3264 x 2448

Date Taken: