Aviascene

Aviascene is a virtual environment for remote exploration. Users can download actual earth topography and surface data from USGS, then go exploring. If they get lost, they can launch an aircraft to reconnoiter. It features a high- performance adaptive OpenGL terrain renderer, airplane and wheeled vehicle physics models, and the ability to mark waypoints at GPS coordinates. It can be used to plan a backpacking trip or just as a flight simulator.