Bullseye Crater in Elysium Planitia
Bullseye Crater in Elysium Planitia
PSP_003398_1910  Science Theme: Volcanic Processes
This HiRISE images allows us to see this unusual geologic feature in three dimensions.

The sequence of events that formed this scene in the equatorial lowlands of Mars are as follows. First, a meteorite impact excavated the 2.2 kilometer (1.4 mile) diameter crater in the center of the picture. Second, the area was flooded by a vast lava flow. However, the lava was not able to overtop the rim of the crater and it remained a large depression.

Third, the area was blanketed by a series of layers of small particles carried by the wind. This deposit makes up what is called the Medusae Fossae Formation and may be composed of volcanic ash. Finally, the Medusae Fossae Formation was largely eroded away by the wind. However, the deposits within the crater were protected from the wind and have remained to this day.

The hills outside the crater are also remnants of the Medusae Fossae Formation.

Written by: Laszlo Kestay  (6 June 2007)

This is a stereo pair with PSP_003543_1910.
Acquisition date
18 April 2007

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
278.8 km (173.3 miles)

Original image scale range
28.1 cm/pixel (with 1 x 1 binning) so objects ~84 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
60°, with the Sun about 30° above the horizon

Solar longitude
221.3°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  338.7°
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   (1158MB)

IRB color
map-projected   (514MB)

Black and white
map-projected  (534MB)
non-map           (628MB)

IRB color
map projected  (213MB)
non-map           (453MB)

Merged IRB
map projected  (276MB)

Merged RGB
map-projected  (265MB)

RGB color
non map           (438MB)
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

DTM details page

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’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.