South Polar "Pit Gullies" (EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)

Numerous Gullies that have formed along the S/W Wall of an elongated shaped Pit are visible in this image. This Pit is located within a degraded approx. 100 Km Impact Crater located in the Southern Presso-Polar Regions of Mars.

Gullies originate along the rubbly, bouldery upper Wall Region and have eroded into the numerous Layered Wall Units before terminating in Fan Deposits on the Pit Floor (here, in the EDM). A previous HiRISE image (ESP_020956_1115) of this location taken during the Spring, showed Frost and interesting dark-toned Flows within the Gully Channels. Neither Frost nor Dark Flows are apparent in this Summer-time image. One goal of HiRISE is to repeat observations at locations such as this to detect changes that may lead to understanding how these Gullies form.