LHASA, Nov. 22 (Xinhua) -- The resort at the entrance of Yarlung Zangbo River Grand Canyon in Tibet, known as the world's deepest canyon, was closed to visitors after a 6.9-magnitude earthquake struck the region.

Three people sustained minor injuries in the earthquake, with 3,000 houses damaged.

No tourist in the resort was injured.

The 504-km Yarlung Zangbo River Grand Canyon, the Potala Palace and Mt. Qomolangma are considered Tibet's three world-class tourist destinations.

With a maximum depth of 6,009 meters, the grand canyon features a rich variety of unique species and plateau scenery.

Editor: liuxin