Topographical Models

All these models are produced from highly accurate Digital Elevation (DEM) and Light Detection and Ranging (LiDAR) data collected through ASTER, USGS NED, and SRTM30+. 

• ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) is the most recent public survey of elevation on Earth and has high coverage and high (~30m) resolution. 

• USGS NED (National Elevation Dataset), is provided by the US Geological Survey and has a resolution of about (~30m). 

• SRTM30+ (Shuttle Radar Topographical Mission) data is very, very coarse (~900m) and is useful to follow the general contours of the land. 

Grand Canyon of the Pacific

Denali and Mount Foraker

Horseshoe Bend

Yosemite Half Dome

Yellowstone National Park

Zion National Park