And while most all of the caves are interesting, if you visit the right cave, or you visit enough of them, you'll see rock and crystal formations that are not only fascinating, but breathtakingly beautiful to look at. If you'd like to find out whether your next travel plans take your near a show cave, or whether a cave is already conveniently located nearby, one way to get started is by using the Internet. A number of caving links are provided below. The Gurnee Guide is a comprehensive yet compact book that is not only sized to travel well, but contains almost 300 pages of perfectly balanced information about caves. The Gurnee Guide is a great introduction to what awaits you underground, and is a great reference too.
Some caves can be surprisingly warm.
Most, however, tend to be a bit on the cool side, hovering somewhere between the fifties and sixties depending upon time of year and in which part of the country. Shirtsleeves are often fine, but a light jacket is definitely a good idea. Most areas within show caves are reasonably well lighted. However, specific features will often be pointed out by your guide using a hand-held light. A compact, powerful flashlight can come in handy for getting a second look at those and other features.