The Old Caoling Tunnel cuts across Sandiau Cape, starting at Yuanwang keng, just inland from Fulung, and ending at Dali on the coast. It is the only remaining section (rebuilt by the Tourism Bureau) of the old Qing dynasty trail that was constructed 130 years ago to provide the only land link down the Northeast Coast from Danshui to Yilan. The present trail is approximately 10 kilometers long and offers a pleasant hike of two to three hours.Two large boulders along the trail bear Qing dynasty inscriptions and are listed as third-class historic sites. One of the inscriptions has four Chinese characters meaningsource: Tourism Bureau, Ministry of Transportasion and Communication
