If in the area this is a must see. You can easily access it from 191 (half way between Blanding and Bluff Utah) on 262. Don't get discouraged as you drive along 262. There are really trashy looking houses and the road is littered with trash and empty beer and soda bottles. This hwy is nothing to write home about and makes it hard to beleive anything of interest could possibly lie ahead. But it does! The road is paved all the way albeit a little rough and any vehicle can make the drive. Once you arrive the canyon and ruins are visible. It is one beautiful canyon and quite different from the all so many red rock canyons of the area. It consists of large sandstone (I think) rocks but they are whiteish. Pinon pine and junipers cover the nearby terrain as well as the valley floor. The ruins look really unstable since many are on rock bed which is sliding down the hill. They are still amazing structures to look at. The National Park service has wonderful facilities and drinking water. They have a really nice network of paths which allow you to get up close to the ruins without disturbing them while keeping you safe and giving you the best views of the canyon. Warning. Stay on the trails and leave everything you come across alone. They have people disguised as tourist watching you and will gladly give you a $275 fine.
There is a fee to enter but that is waived if you have a senior pass.