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Landslide modification of Iapetus' ridge

Landslide modification of Iapetus' ridge
Landslide modification of Iapetus' ridge Iapetus' unique and ancient equatorial ridge shows diverse morphologies, sometimes flat-topped, other times sharp and steep-sided, and in some places there are individual mountainous peaks. This portion of the ridge (Toledo Montes) shows where landslides have modified the flat-topped ridge (at ~225 m/px). Arrows indicate landslide margins and dotted lines show alcoves that are possibly sites of more ancient landslides. No matter how the ridge originally formed (a debated topic), its appearance has been considerably altered by a long history of mass wasting. NASA / JPL / SSI / annotated by Kelsi Singer