[glennon]

In the United States, the National Park Service has some fine 'wild cave' tours. I have led several as a ranger at Mammoth Cave National Park, Wind Cave National Park, Jewel Cave National Monument, and Carlsbad Caverns National Park (Spider Cave & Hall of the White Giant). The Wild Cave tour at Mammoth Cave can be fairly epic if the right guide leads it. These particular parks also each have lantern-type tours that follow rustic, packed-dirt paths on out-of-the way caves and trails. There are actually quite a few other unusual cave tours on federal land throughout the United States, but I have less experience with them (e.g., Round Spring Cave, Missouri; Lava Beds' Crystal Ice Cave, California; Blanchard Springs Caverns, Arkansas; El Capitan Cave, Alaska; Sequoia Nat'l Park's Crystal Cave, California).

Indeed, some of the most spectacular tourist cave experiences are international, such as black water rafting in New Zealand, several eco-adventure resorts in Belize, and 'adventure caving' in Malaysia http://mulupark.com/tours-activities/adventure-caving/

One of my favorite 'normal' tourist caves is Jenolan Caves in Australia. To get to the ticket office and parking lot, you drive through part of the tourist cave. https://goo.gl/maps/aeyabQ3qMEQ2