Volcano discovered smoldering under a kilometer of ice in West Antarctica: Heat may increase rate of ice loss

A temporary seismic array in Marie Byrd Land in West Antarctica recorded two bursts of activity in 2010 and 2011. Careful analysis of the events shows they originate from a subglacial volcano at the leading end of a volcanic mountain chain. The volcano is unlikely to erupt through the kilometer of ice that covers it but it will melt enough ice to change the way the ice in its vicinity flows.
Source: http://www.sciencedaily.com/releases/2013/11/131117155609.htm