3DEM will create 3D terrain scenes and flyby animations and export GIS terrain data files using any of the following freely available terrain data as a source.

USGS Digital Elevation Model (DEM) files
USGS Spatial Data Transfer Standard (SDTS DEM) files
USGS National Elevation Dataset (NED) files
USGS Global 30 Arc Second Elevation Data Set (GTOPO30 DEM) files
NOAA Global Land One-km Base Elevation (GLOBE) files
GEOTIFF Digital Elevation Models
NASA Mars Orbiter Laser Altimeter (MOLA) files
NASA Mars Digital Topographic Map (DTM) files
Any topographic data file organized by rows and columns of elevation data

3DEM can merge multiple DEMs to provide high-resolution maps and 3D projections of large surfaces, limited only by computer memory. 3DEM will export terrain data as USGS DEMs or GeoTiff for use in other Geographic Information System (GIS) programs. 3DEM includes a two-way Global Positioning System (GPS) receiver interface that allows plotting and display of GPS waypoints on the 3D terrain and visualization of an entire route using 3D imagery and flyby animation. 3DEM uses OpenGL for high speed 3D rendering and will produce 24 bit color three dimensional projections, red-blue projections requiring 3D glasses for viewing, or color 3D projections requiring Liquid Crystal Shutter (LCS) electronic shutter glasses for viewing.