USGS EarthExplorer is a free, web-based platform developed by the United States Geological Survey (USGS) that serves as a primary repository for discovering, previewing, and downloading Digital Elevation Model (DEM) data alongside other geospatial datasets.
A DEM represents the “bare earth” topographic surface of the planet, entirely filtering out surface objects like buildings, trees, and vegetation to provide pure terrain data. Core Elevation Datasets on EarthExplorer
EarthExplorer does not provide just one generic DEM; it hosts multiple major, highly sought-after elevation data categories depending on your geographical area of interest: YouTube·John Sakulich How to Download a DEM from Earth Explorer
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