Preparation & Safety: Don't forget to bring sturdy walking shoes, lots of water, snacks, sunscreen, a hat, a camera, and a swimsuit (if desired). Remember that you will be hiking in an arid desert climate, so do everything you can to minimize the risk of dehydration and/or heatstroke by coming prepared. Stay on paths and don't venture off trail where soils or vegetation may be damaged. Your guide will provide additional information about how to protect the resources within the park. Much of the rock in Zion is sandstone which is often brittle or loose, and visitors should move carefully on trails or areas that are made of stone. During spring, fall and winter, remember to wear layers and bring warm, waterproof clothing for a more desirable trip. For hikes in water, we rent a gear package which includes neoprene socks, waterproof shoes, and a hiking stick, and this will greatly enhance your experience! When it rains in Zion National Park the water can accumulate rapidly in slot canyons, washes, and other natural water flow areas. Flash floods are possible, and visitors should avoid going into, or near, any area where a flood may occur. If you have received a pass to the national park, make sure to let your guide know.