We brought along a lantern for this trip. Generally, bringing a lantern is a really good idea (as lanterns throw off much more light than any flashlight)... provided you have a couple back-up light sources handy. During our trip, the screw holding the handle of the lantern became loose, and the lantern crashed to the cave floor. The glass broke, and the lantern was no longer usable. Luckily, we had other light sources available, and were near the end of our trip.