Here it’s clear that there were either two south Kasei flows, or a major internal boundary. Worth a closer look since this makes it more likely that a small amount of an earlier flow is visible beyond the youngest lava at other locations.

ID: ESP_066083_1965
date: 31 August 2020
altitude: 277 km

https://uahirise.org/hipod/ESP_066083_1965
NASA/JPL-Caltech/UArizona
#Mars #science #NASA