Ngorongoro Crater - Constructed using 1 arcsecond resolution SRTM data from the Space Shuttle (about 2.55 million facets). I know it's a giant file but, it looks great...can't wait to print it (well, look up above...I did!). It was made using a new and, as yet, unreleased version of SRTM2STL. The source code for creating files at 3 arcsecond resolution is available up on github under the GNU license. Go to github and search for SRTM2STL.