There are many times when a ranger must have a good picture of his surroundings, in order to plan his next move. With this skill he can take a look at the surrounding area with little effort. The better trained the ranger, the larger the area he can scout without trouble. Many times, one with a trained eye will notice a ranger, high a top of a tree, peering off into the distance. More than likely he is scouting an area, and definitely, he has already noticed you hours ago as you approached.