Shuttle Radar Topography Mission (SRTM) data products
Main source: Shuttle Radar Topography Mission (SRTM) data products
Source for Alaska: USGS Alasaka NED 2 at Seamless data distribution system
Source for North of Canada: Natural Resources Canada CDED at Geobase
Source for North of Eurasia and Groendland: Viewfinder Panoramas
Source for Antartica at Radarsat Antarctic Mapping Project
Source of SRTM Void filled for Eurasia: Viewfinder Panoramas