Mars - Mariner 9

Pits and depression features near the south pole of Mars

High-resolution Mariner 9 image showing an area of irregular pits and depressions near the south pole of Mars. The depressions have flat floors and smooth walls. Similar features are formed on Earth by the scouring action of wind. The largest terrestrial example of these deflation hollows, found in the desert of north central China, are still much smaller than those shown here. The frame is about 75 km from top to bottom and is centered at 74 S, 7 W. (Mariner 9, MTVS 4270-24)
Larger image: 449K

High resolution tiff file (1.0M)

Location & Time Information
Date/Time (UT): 1972
Distance/Range (km): 3000
Central Latitude/Longitude (deg): -74., 007.
Orbit(s): 235

Imaging Information
Area or Feature Type: pit, depression
Instrument: 2-inch Vidicon Television Narrow Angle B-camera
Instrument Resolution (pixels): 700 x 832, 9 bit
Instrument Field of View (deg): 1.092 x 1.413
Filter: haze
Illumination Incidence Angle (deg): N/A
Phase Angle (deg): N/A
Instrument Look Direction: N/A
Surface Emission Angle (deg): N/A

Ordering Information
CD-ROM Volume: N/A
NASA Image ID number: MTVS 4270-24
Other Image ID number: N/A
NSSDC Data Set ID (Photo): 71-051A-04A
NSSDC Data Set ID (CD): N/A
Other ID: N/A


[NASA Logo] Authors/Curators:

Dave Williams,, (301) 286-1258
Code 690.1, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

Jay Friedlander,, (301) 286-7172
Code 612.4, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

NASA Official: Ed Grayzeck,

Last updated: 24 September 2015