I've read the initial tutorial as to how to make a topo map for my Garmin GPSr(s). What I'd really like to do is start with the basic topos and add certain trails to them. I don't want to start from scratch. Is it even doable?
I just discovered this website and I have to say thanks for all of your hardwork. I have not ventured into making my own electronic maps yet, but I hope to find some way to contribute. The topos I've downloaded so far are quite remarkable....much better than anything I've purchased from Garmin.