These spiders (“araneiforms”) are endlessly fascinating to look at, so we’ve made these part of a seasonal series to study fan development over time. The fans are the dark material that often accompany the formations.

ID: ESP_055644_0970
date: 10 June 2018
altitude: 247 km

https://uahirise.org/hipod/ESP_055644_0970
NASA/JPL-Caltech/University of Arizona
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