The only way to see Koh Rok and Koh Haa! Lanta Sunset Adventure is the only tour that leaves in the afternoon to go see Koh Rok and Koh Haa. We are the only tour to reach the islands at this time, which makes for an amazing experience. While they are shut for 6 months of the year to protect them, when they are open the snorkeling here just can't be beat!