This is an interesting rock seen recently by the Curiosity rover on sol 402 (left navigation camera) while making its way toward Mount Sharp in Gale crater. A seat for the weary Martian traveller? 🙂
Paul Scott Anderson is a freelance space writer with a life-long passion for space exploration and astronomy. He currently writes for The Spaceflight Group, AmericaSpace, Universe Today and Examiner.com. His own blog The Meridiani Journal is a chronicle of planetary exploration.