PIA00322: Reull Valles in Approximately Natural Color
Target Name: Mars
Is a satellite of: Sol (our sun)
Mission: Viking
Spacecraft: Viking Orbiter 1
Instrument: Visual Imaging Subsystem - Camera B
Product Size: 1024 x 880 pixels (width x height)
Produced By: U.S. Geological Survey
Addition Date: 1998-06-04
Primary Data Set: Viking EDRs
Full-Res TIFF: PIA00322.tif (2.235 MB)
Full-Res JPEG: PIA00322.jpg (115.7 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

Reull Valles, conspicuous southeast-trending fretted channel, dissects wall deposits of the large Hellas impact basin. Center of picture is at latitude 42 degrees S. longitude 258 degrees. Fretted channels are wide, flat-floored channels with steep walls, which may be runoff channels that have been modified and enlarged by mass wasting. Many nearby hills and mountains are surrounded by lobate debris aprons, which may have formed by slow creep of rock deposits aided by the presence of near-surface ice. Layering is exposed in the channel and crater walls. The color variations of the surface are very bland in this region; most of the variations seen in the enhanced-color version (PIA00153) are due to atmospheric scattering. Viking Orbiter Picture Numbers 126A08 (violet), 126A16 (green), and 126A24 (red) at 157 m/pixel resolution. Picture width is 161 km. North is 112 degrees clockwise from top.

Image Credit:
NASA/JPL/USGS

Image Addition Date:
1998-06-04