A unique opportunity to explore beyond the normal tour of Fisher Cave. This spelunking trip will consist of strenuous crawling, at times through semi-filled water passages, to reach an enormous room. Participants must be 18 or older. You must be equipped with a hard hat; three independent sources of light, two of which should be waterproof; and a wetsuit that covers at least two-thirds of the body.

This trip has a limited number of openings, which are available on a first-come, first-served basis. Reserve your spot by calling Erik Otto, 573-468-8155. Cost: $6; ages 18-19, $5.

America's only ride-through cave. The cave is toured in jeep-drawn trams. Since you ride all the way through, you experience the magnitude, the stillness and the splendor of Fantastic Caverns while preserving its natural features.

The unique tram follows the path of an ancient underground river. Enjoy the beauty of a natural cave without the long walks or steep climbs. The guided, all-riding tour is ideal for seniors, families with small children and physically challenged travelers. Group rates offered.

I-44, exit 77; Route 13 north 1.5 miles, follow the signs. Open year-round. Closed Thanksgiving, Christmas eve and day. Admission: $21.50; age 6-12, $13.50; younger than 6, free.