Barker Dam is a water-storage facility located in Joshua Tree National Park in California. The dam was contructed by early cattlemen, and is situated between Queen Valley and the Wonderland of Rocks near the Wall Street Mill. It is a gathering place for desert wildlife, including many species of birds and Desert Bighorn Sheep. Visitors can reach the dam via a short trail from a nearby parking lot, and can see Native American petroglyphs a short distance to the west. The park offers a Barker Dam Nature Hike led by a ranger. A Joshua tree silhouetted by a rock Joshua Tree National Park is located in south-eastern California. ... Official language(s) English Capital Sacramento Largest city Los Angeles Area - Total - Width - Length - % water - Latitude - Longitude Ranked 3rd 410,000 km² 402. ... Scrivener Dam, in Canberra, Australia, was engineered to withstand a once-in-5000-years flood event A dam is a barrier across flowing water that obstructs, directs or retards the flow, often creating a reservoir, lake or impoundment. ... Trinomial name Ovis canadensis nelsoni The Desert Bighorn Sheep (Ovis canadensis nelsoni) is a subspecies of Bighorn Sheep that occurs in the desert Southwest regions of the United States. ... Petroglyphs on a Bishop Tuff tableland Petroglyph on Petroglyph Point Petroglyphs on Petroglyph Point Petroglyphs on Petroglyph Point Petroglyphs on Newspaper Rock State Historic Monument Petroglyphs from Scandinavia (Häljesta, Västmanland in Sweden). ...