PSA: for environments like that you really should have a paper map and a compass for the same reason you should make sure your tank is full. You don't have to

PSA: for environments like that you really should have a paper map and a compass for the same reason you should make sure your tank is full. You don't have to be a wizard navigator or anything but those will operate when you have no signal and also show you a bigger picture of how to get where you want to go when you find you aren't where you want to be.