Large emergent trees with buttressed roots, in Khao Sok NP. This phenomenon possibly occurs due to the fact that high rising trees are subject to intense winds during tropical storms, yet they have root systems of dangerously little depth, since there is plentiful water and nutrients near the surface.

The tallest trunks of the largest buttressed-rooted trees may rise 30 meters from their base with the top of the crown extending more than 65 meters. These wide-buttressed roots have a great acoustic resonance and in the past they were kicked as a way to send signals and messages across large distances in the forest.