Photo taken on October 8th shows paleolithic caves in the Taihang Mountains. A feature tour focusing on travelling through numerous primitive caves in the Taihang Mountains in north China's Shanxi province is gaining popularity among tourists seeking a unique travel experience. In addition to its traditional travel programs including "The Cowherd and the Weaving Maid Tour," local authorities are promoting this cave tour experience in a bid to attract even more visitors. [xinhua]