The Carlsbad Caverns National Park makes my short list of favorite national parks.  I arrived just as the park was opening and spent the next 5 hours underground.  What a treasure trove! The fact that tripods and flashlights are permitted allowed me to get some nice photographs in the “Big Room.” Many of the speleothems are already illuminated for the visual enjoyment of tourists but not in a fashion that lends to nice photographs. With long exposures and using my flashlight to “paint with light,” I was able to create many images that I am very pleased with.