The heart of MapSend Topo 3D USA is its elevation dataset. All MapSend Topo products use an invisible grid of equally spaced horizontal points, each point having an elevation value, to model the earth? surface. This ?rid·drives the drawing of contour lines on the screen at various zoom levels and it enables Magellan GPS receivers to perform elevation profiling on roads and tracks.

MapSend Topo 3D USA uses the United States Geological Survey (USGS) National Elevation Data 30 meter elevation grid, the most detailed topo elevation dataset available for the USA.

MapSend Topo 3D USA brings this detailed topo data together into one seamless map for the entire continental U.S. plus Hawaii. The package also includes extensive, searchable USGS points of interest such as mountain summits, valleys, springs and much more. Simply click the 3D button, and wow! There? the 3D view of the area, which you can rotate, tilt, customize and explore thoroughly to get a total understanding of the terrain. 3D view on PC only, not available on handheld GPS receiver.