The Sakhalu Trail is located in the Taroko National Park. As early as the Japanese occupation period, the Japanese built a 4.4-kilometer-long, one-meter-wide trail from the rock wall along the coast. Known as the "Mystery Valley Trail", it was later changed back to the "sgadan" of the Tailu name, which means "tooth decay." After the park was established, the road was planned as a landscape trail and a rest platform was added. In recent years, it has become a popular tourist attraction in Hualien. If it takes more than an hour to go back and forth, it is recommended that you take a walk. The most important thing is to understand how hard it is for the ancestors to dig out this trail.