I contribute to openstreetmaps when I visit an area and find the trails are missing. http://maps.me http://maps.me is available on mobil platforms and you can d

I contribute to openstreetmaps when I visit an area and find the trails are missing. http://maps.me http://maps.me is available on mobil platforms and you can download map data by region for offline use. works very well in the backcountry with no cell service.