Staring at the Sea, Staring at the Sand

Staring at the Sea, Staring at the Sand. The smooth, rolling terrain in this high resolution image from NASA MESSENGER spacecraft looks almost like sand dunes or ripples on a beach.

Staring at the Sea, Staring at the Sand. The smooth, rolling terrain in this high resolution image from NASA MESSENGER spacecraft looks almost like sand dunes or ripples on a beach.

MercuryMESSENGER