Jiuzhaigou, compared with other high-traffic scenic spots in China, can be difficult to reach by land. The majority of tourists reach the valley by a ten-hour bus ride from Chengdu along the Min River canyon, which is prone to occasional minor rock-slides and, in the rainy season, mudslides that can add several hours to the trip. The new highway constructed along this route was badly damaged during the 2008 Sichuan Earthquake, but has since been repaired. Further repairs from Mao Xian to Chuan Zhu Si are proceeding, but the road is open to public buses and private vehicles.