However , the park is threatened by large - scale illegal logging , the expansion of large rubber and oil - palm plantations nearby , and incursions by a growing human population involved in farming and hunting .
Visitors must follow strict regulations to avoid degrading the environment .
The park is threatened by large - scale illegal logging , the expansion of large rubber and oil - palm plantations nearby , and incursions by a growing human population involved in farming and hunting .
Visitors must follow strict regulations to avoid degrading the environment .