Crocodylus siamensis), and Cambodia’s largest concentration of Asian elephants ( Elephas maximus). Sunda pangolins (Manis javanica) are critically endangered. Image by Frendi Apen Irawan via Wikimedia Commons (CC BY-SS 2.0). The first biodiversity survey of the Cardamom Mountains in 2000 found that although they cover just 6% of Cambodia’s land mass, they account for most of Cambodia’s large mammal species and half of Cambodia’s known bird, reptile and amphibian species. On the coast, the Cardamom Mountains connect to Peam Krasop Wildlife Sanctuary, which encompasses some of the largest remaining pristine mangrove forests in the Gulf of Thailand and part of one of four Ramsar sites in Cambodia.