This is how the orang utans descend from the free-ranging areas. The bridging pole is lowered to a point of the tree above the hot-wires. The pole is raised up and away from the tree when not in use. Similar in concept to a draw-bridge.
This is how the orang utans descend from the free-ranging areas. The bridging pole is lowered to a point of the tree above the hot-wires. The pole is raised up and away from the tree when not in use. Similar in concept to a draw-bridge.
