Both the continent and the relief in a STL model. I use such models for education, namely to explain that the Antarctic consists of two parts, East Antarctica is a old continent, and West Antarctica is mostly grounded ice and a strip of islands leading to the peninsula.
20-5-2015: added a bedrock model
The continent model was made much in the same way as I made the world model, the relief model was make from a digital elevation model with the help of matlab.
Status 22-may-2015: added new stl and image files