The Black Wall, also known as Happy Acres, is a natural rock formation located in the Las Vegas Wash watershed in Nevada. The site gets its name from the black volcanic rock that lines the walls of the wash. It is a popular spot for hiking and rock climbing due to its unique topography and stunning views of the surrounding desert landscape. The Black Wall is also home to a variety of wildlife, including bighorn sheep, coyotes, and various bird species.

Visitors to the Black Wall can explore the numerous hiking trails that wind through the area, taking in the stunning views of the surrounding desert landscape. The site is also popular among rock climbers, who come from all over the world to tackle the challenging cliffs and boulders. In addition to the natural beauty of the site, visitors may also catch a glimpse of the area's wildlife, including bighorn sheep and coyotes. With its unique topography and breathtaking views, the Black Wall is a must-visit destination for anyone traveling to the Las Vegas area.