“The Case of the Martian Boulder Piles” was uploaded to Flickr

This image was originally meant to track the movement of sand dunes near the North Pole of Mars, but what's on the ground in between the dunes is just as interesting! via NASA ift.tt/2tjh9wx
embiggen by clicking https://flic.kr/p/23RVZDb
The Case of the Martian Boulder Piles was taken on March 06, 2018 at 03:32AM