Basin and Range National Monument encompasses 704,000 acres of - the monuments namesake - basin and range landscapes. These landscapes are made up of alternating steep narrow mountain ranges separated by wide basins with elevations ranging from about 4,200 - 8,900 feet. Here you'll find fascinating geology and rock formations as well as an incredible diversity of plants and animals. And Basin and Range National Monument has one of the best collections of petroglyphs we have ever seen.