Representations of digital elevation data can be greatly improved visually by draping satellite imagery over the terrain, creating realistic 3-D views. 90m SRTM elevation data is now readily available for the entire world. Other local digital elevation sources include: . EuroDEM 10-20m. . SPOT PAN 15m. . Topographic maps 10-40m. . Aerial photographs 2-5m. . Laser Scanning 15cm.

A raster manifold showing a vertical geologic seismic-section. Behind the manifold is an elevation surface (SRTM) draped with a raster image.

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