Lake cave is located in the quiet and beautiful town of Tapolca. From the outside, you can't see that there is a large rugged cave underground. The open part of the cave is for boating, so reservations are required. The whole trip takes about 1.5 hours. But 1 hour of it is to explain the formation of the cave terrain and watch a movie. Then 2 or 3 people are in a boat. The water is clear and the width of the cave makes boating not difficult. You can push the wall with your hands to adjust the direction of the boat, so experience it calmly.