HiRISE | Spiderweb Ridges (ESP_082086

NASA/JPL-Caltech/UArizona

Spiderweb Ridges
ESP_082086_1800 Science Theme: Geologic Contacts/Stratigraphy

This image is of a hill in the Nepenthes Mensae region of Mars. The hill and surrounding ground are covered by numerous connecting ridges that create patterns resembling spiderwebs.

These ridges likely formed as minerals accumulated within underground cracks. Some of the ground surface was then removed by wind and/or water, revealing the mineral-filled cracks.

Written by: Chris Okubo (27 March 2024)

Acquisition date
30 January 2024

Local Mars time
15:54

Latitude (centered)
-0.089°

Longitude (East)
133.326°

Spacecraft altitude
269.9 km (167.8 miles)

Original image scale range
from 27.1 cm/pixel (with 1 x 1 binning) to 54.1 cm/pixel (with 2 x 2 binning)

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
3.0°

Phase angle
55.6°

Solar incidence angle
59°, with the Sun about 31° above the horizon

Solar longitude
190.3°, Northern Autumn

For non-map projected images
North azimuth: 97°
Sub-solar azimuth: 0.7°

JPEG
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

JP2
Black and white
map-projected   (295MB)

IRB color
map-projected   (114MB)

JP2 EXTRAS
Black and white
map-projected (155MB)
non-map           (249MB)

IRB color
map projected (37MB)
non-map           (100MB)

Merged IRB
map projected (81MB)

Merged RGB
map-projected (79MB)

RGB color
non map           (95MB)

ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
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

USAGE POLICY
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-Caltech/UArizona

POSTSCRIPT
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.