3D Render of a Topographic Map of Poland. All source data is in the public domain. Boundaries Level 0: Humanitarian Information Unit HIU, U.S. Department of State (database: LSIB) http://geonode.state.gov/layers/geonode%3ALSIB7a_Gen Relief texture and Rivers: SRTM data courtesy of USGS. URL of source image: https://e4ftl01.cr.usgs.gov//MODV6_Dal_D/SRTM/SRTMGL1.003/2000.02.11/ Water texture: SRTM Water Body SWDB: https://dds.cr.usgs.gov/srtm/version2_1/SWBD/
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