Mars - Mariner 9

Central caldera of Olympus Mons on Mars

Mariner 9 image of the central caldera of the Martian volcano, Olympus Mons. the basic morphology is similar to terrestrial calderas, although the scale is much larger. The smallest (and youngest) collapse pit, at right, is 30 km across. Concentric fractures and terraces are visible in the larger parts of the caldera. The caldera is about 29 km above the mean Martian surface. North is at 7:00. (Mariner 9, MTVS 4265-52)
Larger image: 426K

High resolution tiff file (1.0M)

Location & Time Information
Date/Time (UT): 1972
Distance/Range (km): 4000.
Central Latitude/Longitude (deg): +18.,133
Orbit(s): 230

Imaging Information
Area or Feature Type: caldera, volcano
Instrument: 2-inch Vidicon Television Narrow Angle A-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 4265-52
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