Osuga Valles Depression and Part of Relict Channel
HiRISE PICTURE OF THE DAY: 1 APRIL 2025

Part of a Relict Channel

This public image suggestion via HiWish kept the rationale simple: “We wish to study the depression properties and mineralogical data to examine the stratigraphy of the walls.” Osuga Valles is a complex set of channels located near Eos Chasma. The channels were likely cut by multiple episodes of flowing water.



HiRISE Instrument News
Since July 23, 2023, HiRISE observations have lacked data from the RED4 CCD due to a hardware issue, creating a gap in the middle of image products and reducing the color swath to 1 CCD width. We are investigating the hardware issue and may be able to acquire some RED4 data in the future.

Circular Sand Dunes
Sand dunes of many shapes and sizes are common on Mars. In this example the dunes are almost perfectly circular, which is unusual.