To visit these two caves take the Ao Luk-Laem Sak route for approximately two kilometers and then take a right turn to the Bo Tho Pier. From the pier, hire a rental boat and travel along the Tha Prang Canal for approximately 15 minutes. After passing a mangrove swamp, you will see Tham Lot Tai a cave beneath a limestone hill with a stream flowing through narrow passages. The main attractions are beautiful stalactites and stalagmites. Tham Lot Nuea is a large cavern with meandering passages longer than those of the Tham Lot Tai, which are navigable only during low tide.