Luon Cave is 14 km to the south of Bai Chay Tourist Wharf, lies on the north-eastern part of Bo Hon Island. The cave is located among many famous sights of Halong Bay. For example, Turtle Islet is in front of the cave, and Sky Gate is on the right, and Sung Sot Cave is only 1 km away. Visitors are taken back by the upright imposing limestone mountains and the crystal clear water nearby the cave. Coming closer, Luon Cave appears in shape of a bending bow. Guests have to get on a small boat or kayak to go inside the cave.