The NH 212 runs in the middle of the Wayanad forest. It is such a beautiful experience driving though it. Its also quite tempting to park the vehicle and walk down a little. And when you do such things, this is what you see!
A tree house is normally 100-150 feet high. This picture shows the entrance to one such. Walking down this path leads one to a manually operated lift that can be levitated in the air using a pulley mechanism.