HiRISE: An inverted crater

ESP_043651_1590There is a circular feature in this observation that appears to stand above the surrounding terrain. This feature is probably an inverted crater: a once-normal appearing impact crater that was filled in with sediment. The fill became indurated, or hardened, until it was more resistant to subsequent erosion than the surrounding material.

This entry was posted in Reports and tagged , , , , , , , . Bookmark the permalink.

Comments are closed.