Suggest that travelers upload maps to their phones or GPS devices prior to departure.
For extreme terrain and remote locations, adventurers should carry a GPS app installed on their mobile phone. Alternatively, they can carry a separate GPS device. Suggest that travelers upload maps to their phones or GPS devices prior to departure. They also might choose to learn how to use and to bring an altimeter, compass, and local topographic map (the latter might need to be acquired in-country).