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These caves were bomb shelters during the Vietnam War. North of town, about 50 min by foot and can be found without a guide. There is a 10,000 kip toll to enter, to see the village, or to walk past the village. It is claimed this money is for a bridge but if you demand a ticket you will see it is for the cave only and can refuse to pay if you wish. Continue past the caves for about 45 min to reach Ban Na village for lunch, though options are limited.