Sloan Canyon National Conservation Area, Nature reserve in Henderson, United States.

Sloan Canyon National Conservation Area is a protected desert region featuring volcanic formations and open terrain across thousands of acres. The landscape combines flat sandy areas with rocky outcrops and dark lava flows that mark the geological history of the place.

The Sloan Petroglyph Site within the area was listed on the National Register of Historic Places on December 19, 1978. The surrounding land later became a National Conservation Area administered by the Bureau of Land Management, protecting 48,438 acres south of Henderson. Archaeologists attribute the more than 300 rock art panels, with 1,700 design elements, to native cultures from the Archaic to historic eras.

Sloan Canyon holds more than 300 rock art panels with about 1,700 individual design elements, made by Native cultures from the Archaic to historic eras. The site is called the Sistine Chapel of Native American rock art for their size and number. The Bureau of Land Management does not publicize the exact location of the petroglyphs because of vandalism.

The area can be accessed from several trailheads that allow visitors to hike, bike, or ride horses through the landscape. Come prepared with plenty of water and sun protection, as the open desert offers little shade on most routes.

The northern section displays dark lava fields and glassy volcanic zones that resulted from ancient eruptions. These geological features stand out distinctly from the surrounding desert and reveal how volcanic forces shaped the land long ago.