These well-defined curving ridges are likely inverted stream channels, probably a delta. Their material was more resistant to erosion than the surrounding terrain, so they stand in gorgeous relief.
ID:
ESP_055116_1735date: 30 April 2018
altitude: 266 km
https://uahirise.org/hipod/ESP_055116_1735
NASA/JPL-Caltech/UArizona
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