Diamond Dive is a roller coaster, owned and operated by Chinafrog Excitement Ltd., built from the framework of an abandoned diamond and mineral mineshaft. Found by a pair of mountaineers in 1989, the ruins were believed to be an illegal operation carried out by a group of criminals in the area. Chinafrog Excitement bought the land rights to the property in 1998 and turned the ruins into a one-off, mining-themed roller coaster.