3d topo model of Yosemite's Mt Conness. It is pictured in front of the actual mountain. The data comes from http://opentopo.sdsc.edu/ where you can freely download amazingly detailed datasets from around the world. We talked about this thing and a whole lot more on the 3D Printing Today podcast available on iTunes, Stitcher radio or direct from the source at http://threedprintingtoday.libsyn.com/ The technique for making this model is detailed in my youtube video https://www.youtube.com/watch?v=t4-ICkvyJv0.