After a four-year closure due to natural disasters, Crystal Cave in Sequoia National Park reopened to the public this weekend in time for Memorial Day, the unofficial start of the summer.

Crystal Cave in Sequoia National Park is reopening for guided tours after a four-year closure due to natural disasters. The cave, formed in 200 million-year-old marble, features unique geological ...

Crystal Cave is one not to miss, according to travelers, many of whom call it a surprise highlight of their visit. The subterranean marble cavern is filled with stalactites and stalagmites.

Fisher says a person can stay inside the cave for only six to ten minutes before ... For its pale translucence, this crystal form of the mineral gypsum is known as selenite, named after Selene ...

Ancient Chinese made various kinds of incense burners, among which the censer and Xun Long, a frame place over a censer for scenting clothes, were the most popular. The earlier incense burners ...