An Unusual Hole on the Martian Surface | NASA's Mars Reconnaissance Orbiter

An Unusual Hole on the Martian Surface | NASA's Mars Reconnaissance Orbiter

What created this unusual hole in Mars? Actually, there are numerous holes pictured in this Swiss cheese-like landscape with all-but-one of them showing a dusty, dark, Martian terrain beneath evaporating, light, carbon dioxide ice. The most unusual hole is on the upper right, spans about 100 meters, and seems to punch through to a lower level. Why this hole exists and why it is surrounded by a circular crater remains a topic of speculation, although a leading hypothesis is that it was created by a meteor impact. Holes such as this are of particular interest because they might be portals to lower levels that extend into expansive underground caves. If so, these naturally occurring tunnels are relatively protected from the harsh surface of Mars, making them relatively good candidates to contain Martian life. These pits are therefore also prime targets for possible future spacecraft, robots, and even human interplanetary explorers.

Mars Reconnaissance Orbiter (MRO) is a spacecraft designed to study the geology and climate of Mars, to provide reconnaissance of future landing sites, and to relay data from surface missions back to Earth. It was launched on August 12, 2005, and reached Mars on March 10, 2006. 

The University of Arizona, in Tucson, operates HiRISE. It was built by BAE Systems in Boulder, Colorado. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.

For more information on MRO, visit:

https://mars.nasa.gov/mro

science.nasa.gov/mission/mars-reconnaissance-orbiter
https://www.nasa.gov/mission_pages/MRO/mission/index.html

Image Credit: NASA, MRO, HiRISE, JPL, U. Arizona
Release Date: April 13, 2025

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