SimpleDEMViewer browses DEM (Digital Elevation Model) data as pictures. It displays color elevation maps with shading. It supports gtopo30, etopo2, etopo5, globe, srtm, srtm dted, hydro1k, and many bil form data. User should prepare DEM data separately. You can make Mercator projection map, Corn projection map, orthographic projection maps. You can show pictures, movies or Web pages linked to any places on the earth using memo function.