NASA Mars Odyssey Finds Possible Cave Skylights on Mars

Mars Odyssey has found what appears to be caves on the surface of Mars. This is exciting for many who think that this could provide a new less harsh environment for life on Mars. The temperatures in the caves seem to be less extreme being cooler in the day and warmer at night than surface temperatures. While the holes that have been found are at a high altitude on one of Mars' volcanoes and would not be able to support human life, it does provide hope for the discovery of similar geological features elsewhere on the planet.