Dear All, I am trying to generate a Garmin map containing not only the OSM data and contour lines but also some DEM data to display a hill shading in BaseCamp and on the Garmin device. The general map creation works fine (osm data + contour lines) using the process described on my website (www.maiwolf.de/gps). But so far I fail to use the previously described --dem options. I am using the latest mkgmap release and the following command line: java -Xmx2000M -jar D:[path to mkgmap]mkgmap.jar --dem=C:\hgt --dem-interpolation=auto --dem-dists=3312,3312,3312,13248,26512 --overview-dem-dist=88368 Some example .hgt files are found in the "C:\hgt" folder. Yet nothing happens. No error and no output. So I am wondering if my command line is wrong and if the latest mkgmap version is still having the capability to generate dem data files. I would appreaciate if somebody could describe a successful process in more detail. Regards, Bernard