China: Huanglong — The Valley of Emerald Ponds

Huanglong, in the northwest part of Sichuan, China, is known for its colorful travertine pools formed by calcite deposits, as well as diverse forest ecosystems, snow-capped peaks, waterfalls and hot springs. Huanglong is also home to many endangered species including the giant panda and the Sichuan golden snub-nosed monkey. Huanglong was declared a World Heritage Site by UNESCO in 1992 because of its outstanding travertine formations, waterfalls and limestone formations as well as its travertine terraces and lakes rating among the three most outstanding examples in the world.