This image covers a 26-kilometer-wide impact crater northeast of the Hellas impact basin. The crater exposes large blocks of bedrock (called “megabreccia”) in both the central uplift and in the walls of the crater.

The enhanced-color subimage from the wall shows a large, approximately 250-meter-wide reddish block, although actually “red” in the infrared-shifted color of HiRISE. These blocks could be ejecta from the ancient Hellas impact or other large impacts from billions of years ago.

ID: ESP_035998_1555
date: 1 April 2014
altitude: 255 km

https://uahirise.org/hipod/ESP_035998_1555
NASA/JPL-Caltech/University of Arizona
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