There is an isolated village on the top of a mountain in Liangshan Yi autonomous prefecture, Southwest China's Sichuan province. Atule'er village is a home to 72 families and is known as a "cliff village." Children climb up an 800-meter (2,624 ft) cliff using 17 vine ladders tied together with no safety measures to go to school. But finally this ladder was changed to a steel one. It is larger and has safety rails.