marking popular intersections with other trails and other landmarks. Then I downloaded all those waypoints onto the computer and pulled them up and reviewed the images. Very cool...

Same thing with the one I had mentioned except it takes sd card up to 2 gigs and you have much better topo maps as well as satilite imagining ect.. It's like google earth all on a hand help unit. The sd cards allow you to save more so it can be brought back up whenever you wish to change the cards when storing much more memory..