On Thu, Feb 17, 2011 at 7:57 AM, Phil! Gold <phil_g at pobox.com> wrote: > The OpenCycleMap elevation data comes from the SRTM dataset, which was > obtained by taking stereoscopic images from the Space Shuttle. I thought the R stood for Radar, not steReoscopic? But yes, SRTM data is known for being flaky. Toby