Martian life in hole? Missile silo?

Martian life in hole? Missile silo?

What created this unusual hole in Mars? The hole was discovered by chance in 2011 on images of the dusty slopes of Mars’ Pavonis Mons volcano taken by the HiRISE instrument aboard the robotic Mars Reconnaissance Orbiter currently circling Mars.   The hole appears to be an opening to an underground cavern, partly illuminated on […]