GTOPO30 is a digital elevation model for the world, developed by USGS. It has a 30-arc second resolution (approximately 1 km), and is split into 33 tiles stored in the USGS DEM file format.
References
GTOPO30 Wikipedia(Text) CC BY-SA
GTOPO30 is a digital elevation model for the world, developed by USGS. It has a 30-arc second resolution (approximately 1 km), and is split into 33 tiles stored in the USGS DEM file format.