USGS GTOPO30
A global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometre), specified by the United States Geological Service.
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A global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometre), specified by the United States Geological Service.
Last updated on Tuesday, October 15, 2024
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