When it comes to exploring underground tunnels or caverns that are open to the public, the term "show cave" is typically used. However, there are several synonyms for this term that can also be used. For instance, the term "tourist cave" is commonly used to refer to caves that have been opened for public viewing. The term "accessible cave" is also used to describe caves that are easy to explore and navigate, even for those who are not experienced cavers. Finally, the term "commercial cave" is sometimes used to refer to show caves that operate as a business, with paid tours and other amenities provided to visitors.