Castle Valley is a picturesque valley located in Grand County, Utah, in the western United States. The valley is known for its stunning red rock formations and towering mesas, which make it a popular destination for outdoor enthusiasts and photographers alike.

The valley is named after the prominent feature of the area, the Castle Rock, which is a towering sandstone formation that rises more than 1,200 feet above the valley floor. Other notable features in the valley include the Priest and Nuns formation, the Fisher Towers, and the Parriott Mesa. These formations have become popular locations for rock climbing, hiking, and sightseeing.

Castle Valley is located near the Colorado River, which flows through the valley and provides opportunities for rafting and kayaking. The area also has numerous hiking trails, including the Fisher Towers Trail, which offers stunning views of the rock formations.

The town of Castle Valley is a small community that is located within the valley. It has a population of just over 300 people and is known for its beautiful natural surroundings and laid-back atmosphere. The town is home to several small businesses, including a cafe, art gallery, and outdoor equipment rental store.