Explore the Luray Caverns

The caverns are located in the town of Luray, which is in the Shenandoah Valley of northwest Virginia. They can only be explored by tour, and at first I was hesitant to pay the $26 entrance fee, but after an hour-long tour that blew my mind, I had absolutely no regrets. The tour includes about 30 people, with a guide describing the details of the cavern along the way. It's easy enough to stay in the back of the pack and take photos without any human interference. The tour usually takes about an hour to do. It's the perfect activity for a hot summer day, since the caverns stay a cool 54 degrees.

Since tripods are not allowed in the caverns, the best way to photograph them are with flash. The flash is not harmful to the caverns and is even recommended by the tour guide. If using a SLR camera, bring your widest lens and keep the aperture relatively large.

As with other limestone or "solution" caves, formations at Luray Caverns result from a solution of calcium carbonate giving up some of its carbon dioxide, thus allowing a precipitation of lime to form. This precipitation begins as a thin deposit ring of crystallized calcite, but continues to collect, creating stalactites and other types of dripstone and flowstone. Formations at Luray Caverns are white in color if the calcium carbonate is in its pure form. Other colors reflect impurities in the calcite resulting from elements absorbed from the soil or rock layers: reds and yellows due to iron and iron-stained clays; black from manganese dioxide; blues and greens from solutions of copper compounds. Luray Caverns remains an active cave where new formation deposits accumulate at the rate of about one cubic inch every 120 years.