Learn about the topography of Titan, one of Saturn's moons, in this interactive activity adapted from NASA. Videos and visualizations show how the geologic processes of Earth and Titan may be similar. Ontario Lacus, a lake made of liquid methane and ethane, has familiar shoreline features such as alluvial fans, flooded valleys, and deltas. Sikun Labyrinthus, is an area of karst topography where liquid has dissolved the rocks and produced a characteristic landscape of hills and valleys. Racetrack Playa, a dry lake bed in Death Valley, exhibits features that are comparable to those seen on Titan. This resource is part of the NASA Planetary Sciences Collection.