Caving or spelunking is definitely not a sport for those prone to claustrophobia. It is, on the other hand, a fantastic sport for the adventurous explorer. Though caves have long been utilized for various functions such as storage or scientific study (speleology), as a recreational pursuit, caving is relatively new. This newness lends itself to an excitement among skilled cavers, some of whom may be the discoverers of previously unexplored underground systems.

The caves that are known in Aroostook are on public lands, not because of lack of access but because of a lack of exploring. Examples of the regional caves include: