Purgatoire River
This sample uses all of the first sample 30-meter DEM from the Shuttle RADAR Topography Mission (SRTM). The area in southern Colorado reaches from the Spanish Peaks along the Rocky Mountain front in the southwest across the high plains to the east. The incised canyon network of the Purgatoire River dominates the northeastern part of the scene. The texture layer was created in the Landscape builder by merging the elevation raster, color-coded by elevation and displayed with partial transparency, with an underlying relief-shaded view of the terrain. Although all data in the simulation were derived from the DEM, the combination of color coding, shading, and 3D display provides a very effective and realistic view of the terrain in TNTsim3D. Additional SRTM DEMs should soon be available. A security hold had been placed on the data following the September 11 attacks, but this hold has recently been lifted for data acquired over the United States. As of this writing data for areas outside of the United States are still restricted and unavailable for security reasons.
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