The chasma is approximately 900 kilometers long and is located in western Valles Marineris.
The floor of Ius Chasma is between 8 to 10 kilometers deep and is divided by a prominent east-west trending ridge known as Geryon Montes.
The region in this image is located (approximately 7.8 degrees S, 279.5 degrees E) on the floor of Ius Chasma.
A variety of light and medium-toned terrains and layered units of different rock types comprise the chasma floor.
Prominent faults of various sizes have displaced and deformed these layered units and outcrops, some in a spectacular fashion.
The ejecta of small fresh-appearing impact craters formed in the light-toned units reveal the existence of a darker (likely basaltic) underlying substrate.
Linear dunes are located on top of the lighter-tone outcropping units and are ubiquitous on the chasma floor.
These dunes are oriented in a north-south direction and indicate prevailing westerly winds through the canyon.
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