Many of us tend to think of Antarctica as a sheet of solid snow and ice. But, in contrast with its peer to the north, the southern pole's ice sheet lies atop a rocky continent. What are its features, its mountains and valleys, plains and coastlines?
A new dataset from the British Antarctic Survey provides the most detailed map ever of the bedrock below, information scientists hope will enable them to better model the affects of climate change on the ice, whose melting will have an impact on climate the world over.
A video from NASA peels back the ice, and gives you a tour of that land unseen: