Gamma Ray Spectrometer Archives - Astrobiology

Regional context and geospatial distribution of potential karstic skylight features in Hebrus Valles, Mars. (a) Mars Orbiter Laser Altimeter (MOLA) global topography illustrating the location of Hebrus Valles relative to Tharsis and Elysium volcanic provinces. (b) Regional elevation map of the Hebrus Valles–Hephaestus Fossae region, highlighting skylight cave candidates identified in this study (pink stars) and previously reported features (black stars) by D. Sulcanese et al. (2018). --The Astrophysical Journal Letters

Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mars, Status Report

Water-driven Accessible Potential Karstic Caves in Hebrus Valles, Mars: Implications for Subsurface Habitability

by Keith CowingNovember 13, 2025November 13, 2025

The Hebrus Valles region on Mars exhibits geomorphological indicators of past aqueous activity, such as fluvial channels and aligned sinkholes.