The Southwest region of the United States offers many excellent overlanding destinations. Here are some popular places to consider:

1. Moab, Utah: This desert region is known for its incredible red rock formations and is home to several famous trails such as the Hell's Revenge Trail and the Slickrock Trail.

2. Sedona, Arizona: Sedona is famous for its red rock formations and beautiful scenery. The area has numerous off-road trails to explore, including the Broken Arrow Trail.

3. Big Bend National Park, Texas: Big Bend offers miles of dirt roads and remote campsites. The park is home to some of the most rugged and scenic terrain in the country.

4. Death Valley National Park, California: This is the largest national park in the contiguous United States and features miles of off-road trails, sand dunes, and stunning views.

5. Joshua Tree National Park, California: Joshua Tree is known for its unique rock formations, desert scenery, and challenging off-road trails.

6. Grand Canyon National Park, Arizona: The Grand Canyon is one of the most iconic destinations in the world. While you can't drive into the canyon itself, there are plenty of nearby dirt roads and trails to explore.

7. Anza-Borrego Desert State Park, California: Anza-Borrego is the largest state park in California and offers miles of dirt roads and campsites. The park is known for its unique desert flora and fauna.

These are just a few of the many great overlanding destinations in the Southwest region. As always, make sure to research the area, obtain any necessary permits, and follow Leave No Trace principles to minimize your impact on the environment.