A mountain range the size of the Alps was found fairly recently (2009) buried under the ice in Antarctica: https://www.theguardian.com/environment/2009/feb/24/

A mountain range the size of the Alps was found fairly recently (2009) buried under the ice in Antarctica: https://www.theguardian.com/environment/2009/feb/24/antarctica-mountains https://www.theguardian.com/environment/2009/feb/24/antarcti...