Scientists say the possible discovery of mud volcanoes on Mars could boost the search for the planet’s past life.
If life ever existed on Mars, the evidence could be buried deep below the surface, where it may be warm enough for water to remain in a liquid state.
Mud volcanoes could transport rocks from depths of several kilometres up to the surface, where robotic explorers could reach them.
Details were presented at the Lunar and Planetary Science Conference in Texas.
Forget about the face on Mars, this is the boob on Mars.