A biennial international underground river rafting festival celebrating the themes of passion, joy, exercise and health kicked off in Yishui county, Linyi city, Shandong province, on July 13.The 3rd Shandong Yishui International Underground River Rafting Festival is organized by the Shandong Longgang Travel Group.

During the festival, the Shandong Underground Grand Canyon tourism zone will launch a month-long rafting competition for visitors and showcasing such challenging feats as a man sleeping with snake for 100 days in underground Yingguang Lake tourism zone.