A trail is made up of a series of signs, largely comprising directions, which are laid on the ground.
Tracking has been part of scouting and guiding since the beginning; it was the subject of several of Baden-Powell's campfire yarns.
In the eleventh he wrote that "One of the most important things that a Scout has to learn... is to let nothing escape his attention".
Following this, in yarn twelve, he wrote about spooring, relating to the tracking of people and animals.
[2] The basic Tracking signs that all guides and scouts learn include "This way","No Entry or Danger", "Turn Left", "Turn Right", "Water Ahead", "Obstacle ahead", Split Group", Message _ paces this way" and of course "Gone home" Tracking also involves interpreting the calls and movements of animals to determine whether other people are nearby.