The Jeita upper cave has an overall length of 2,130 metres (6,990 ft) of which only 750 metres (2,460 ft) are accessible to visitors via a specially conceived walkway; access to the remainder of the cave was restricted to prevent ecological damage which may occur due to the flocking tourists. The upper gallery is famous for its formations, lit by an effective lighting system. The part accessible by visitors has three huge chambers. The first is called White Chamber, the second Red Chamber, due to the color of the formations. The White Chamber is medium sized, but has the most impressive formations of the cave. The longest stalactite in the world is located in Jeita's White Chamber; it measures 8.2 metres (27 ft) long.