What is the only U.S. state without a cave?

The State of Delaware has been long known as the only state in the Union without a cave - the "Caveless State". However, this has proven not true as Delaware DOES have a cave - Beaver Valley Cave! In 1977, Jack H. Speece documented this unique cave in a paper he presented at that year's NSS Convention. The following is an edited version of that paper and is presented here with the kind permission of Jack H. Speece.

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A look at Delaware's geology would be enough to indicate that caves would not be found here. However, a cavity of significance does exist less than 100 feet from the Pennsylvania border. This shelter was used by the Delaware Indians who roamed the Delaware Valley over 200 years ago. Archaeological studies were performed here in the 1940s. It wasn't until 1958 that the site became known to the Speleological world. Since that time the cave has been "discovered", reported and mapped more than any other cave of equal size in the country. It has become important scientifically, historically, speleologically and archaeologically. This cave of Delaware has become a matter of great discussion among caving circles in recent years.