NASA’s Jet Propulsion Laboratory

Antarctica is a weird place. Scientists have long studied the behavior of its massive ice sheets and the land underneath them in the hopes of understanding the unique geological quirks of the continent, but are frequently puzzled by new discoveries. Now, one of the biggest head-scratchers of all might finally have an answer, and it all starts deep under the surface.

Two icy volcanoes may erupt at Pluto’s south pole, according to images from NASA’s New Horizons spacecraft.

The images show two mountains in circular shape and with deep depressions in their centers. One, Wright Mons, is 3 to 5 kilometres high and the other, Piccard Mons, is up to 6 kilometres high.