Photo shows the beautiful scenery of the Earth Forest Geoparkin Zanda County, Ali Prefecture, southwest of Tibet Autonomous Region. The Earth Forest Geopark features a stone forest composed of red Ordovician carbonate rocks, as well as karst canyons, caves, lakes, springs and waterfalls. It is the largest and most distinctive clay forest that was formed due to the air-slaking of the tertiary stratum.(Photo/China News Service)

Photo shows the beautiful scenery of the Earth Forest Geoparkin Zanda County, Ali Prefecture, southwest of Tibet Autonomous Region. The Earth Forest Geopark features a stone forest composed of red Ordovician carbonate rocks, as well as karst canyons, caves, lakes, springs and waterfalls. It is the largest and most distinctive clay forest that was formed due to the air-slaking of the tertiary stratum.(Photo/China News Service)

Photo shows the beautiful scenery of the Earth Forest Geoparkin Zanda County, Ali Prefecture, southwest of Tibet Autonomous Region. The Earth Forest Geopark features a stone forest composed of red Ordovician carbonate rocks, as well as karst canyons, caves, lakes, springs and waterfalls. It is the largest and most distinctive clay forest that was formed due to the air-slaking of the tertiary stratum.(Photo/China News Service)

Photo shows the beautiful scenery of the Earth Forest Geoparkin Zanda County, Ali Prefecture, southwest of Tibet Autonomous Region. The Earth Forest Geopark features a stone forest composed of red Ordovician carbonate rocks, as well as karst canyons, caves, lakes, springs and waterfalls. It is the largest and most distinctive clay forest that was formed due to the air-slaking of the tertiary stratum.(Photo/China News Service)