Excerpt from article:

"Trees in Malaysia grow to a height of 200 feet ,the jungle canopy being very dense, and when flying over it at that time presented an unbroken carpet of verdant green. There was only two ways to travel the country, either by air to one of the few landing strips or by boat and hovercraft on one of the numerous rivers that also gave cover to the pirates that operated from them and for which even today the area is notorious. Pirate hunting in the South China Sea is another Far East Air Force story involving RAF Seletar?s Marine Craft Unit and RAF Changi?s Shackletons of 205 Squadron. That is another tale for another day."

More at:

http://britains-smallwars.com/Borneo/Treescape.html