The major reason for the decline of Asian elephants is the harm to their forests. The huge increase in the human population has caused the destruction of the Asian forest for human population. As a result, the Asian elephants are compelled to scatter in different areas. Originally they lived all over the continent, but now there are only small isolated populations left. These isolated elephant populations are vulnerable to extinction. While Asian elephants are threatened by illegal capture and detaining, they are also killed for ivory and skin. In July 1990, a British wildlife group uncovered a black market for elephant skin. Elephants are shot in the forest along the border between Thailand and Burma, and their skin was sold to factories in Bangkok. Their skin is made into shoes, belts, suitcases, wallets, etc., to sell to tourists.