Intricate Valley Glaciers on Pluto

The backlighting highlights the intricate flow lines on the glaciers. The flow front of the ice is moving into the informally named Sputnik Planum. The origin of the ridges and pits on the right side of the image remains uncertain. This image is 390 miles (630 kilometers) across.

http://photojournal.jpl.nasa.gov/catalog/PIA19943