There are LOADS of different maps to choose from. The LoMaps, designed for Locus are vector maps but pretty detailed, including elevation data and displayed contours (which can be turned off.) There are also digital topo maps of many areas. You can also take a photo or scan of a topo, or an aerial photo, and calibrate it in Locus. As noted, there's also the option of creating your own, either by drawing on a map and scanning it, creating a map by adding to something already out there (not through Locus) or by recording tracks when you ride something once and displaying them over the top of any other map you like. I'm probably going to have to make my own mount as there seems to be absolutely NOTHING available for the original Galaxy Tab Active (8"), only the Active 2.