**10.1 Malaysia, 1975 - 2002**

The author personally noticed significantly increased density of rainforests in Malaysia during the period 1975 - 2002. In the period of 1975-78 in the area of Tanah Rata, Cameron Highlands, it was noticed it was mostly possible to walk upright around in the rainforests without being significantly obstructed by the undergrowth. Paths in the forests frequented by people were relatively clear, allowing people to walk upright with little obstruction.

In 2002, in the same Tanah Rata region, it was found that the same natural rainforests had become significantly more dense. It had become much more difficult to walk around in the rainforests, because of obstruction from the undergrowth and vines. It was observed that passages in the forests had become more of tunnels allowing crouching and crawling through the undergrowth, crouching and crawling, rather than upright walking, through the undergrowth.

This expected increasing density of forests over the last few decades has also been observed by the author in the Sedona area of Arizona in 2012. This area has also been the backdrop of movie Westerns from close to 50 years ago, which form a basis of comparison for the vegetation densities we see today.
