Hi Eric, hi all, > HOWTO - Importing USGS 7.5min Data you text is included in GRASS FAQ: http://www.geog.uni-hannover.de/grass/grass_faq.html -> Import of specific file formats into GRASS -> USGS 7.5min DEM data (http://www.geog.uni-hannover.de/grass/faq/importing_usgs_7_5min.html) Thanks for providing it! Markus Neteler