Elysium Mons Caldera
Elysium Mons Caldera
PSP_004903_2050  Science Theme: Volcanic Processes
PSP_004903_2050 captures the full western margin of the Elysium Mons caldera. A caldera is a feature that forms by the collapse of land after a volcanic eruption. This caldera is approximately 14 kilometers in diameter.

Several pit crater chains can be observed radiating out from the caldera. These likely formed due to surface collapse from igneous dike intrusions and/or normal faulting. Some are very clear and pronounced, such as the one to the north of the caldera, and others are fainter, such as the ones at the bottom of the image, suggesting the lower ones have been subsequently covered by sediments, dust, or lava flows.

Written by: Alix Davatzes  (22 August 2007)
Acquisition date
13 August 2007

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
274.9 km (170.8 miles)

Original image scale range
54.8 cm/pixel (with 2 x 2 binning) so objects ~164 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
58°, with the Sun about 32° above the horizon

Solar longitude
294.8°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  314.0°
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

Black and white
map-projected   (1161MB)

IRB color
map-projected   (525MB)

Black and white
map-projected  (699MB)
non-map           (626MB)

IRB color
map projected  (252MB)
non-map           (549MB)

Merged IRB
map projected  (1117MB)

Merged RGB
map-projected  (1027MB)

RGB color
non map           (510MB)
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible:
NASA/JPL/University of Arizona

NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA’s Science Mission Directorate, Washington. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.