Martian Leprechauns?

Conspiracy theorists have hypothesized that the Air Force and US Government is hiding alien bodies on Mars. The Mars Global Surveyor as wells as several Mars Rovers have taken pictures showing figures on the surface of Mars that seem to resemble aliens. The Mars Global Surveyor released images, which show a human face or a "hockey mask" carved into the Cydonia plains on Mars. After further investigation NASA concluded that the life-like images were actually windblown rocks on the surface.