Perched at the edge of an outflow channel, these two craters appear to have lost a portion of their crater rims during a flood event.

Alternatively, it is also possible that the craters impacted the edge of the outflow channel after the flood occurred and we are seeing the difference in the strength of the material impacted.

ID: ESP_050746_1775
date: 24 May 2017
altitude: 267 km

https://uahirise.org/hipod/ESP_050746_1775
NASA/JPL-Caltech/UArizona
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