Boundary Cone

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Boundary Cone
Boundary Cone from Mohave Valley 1.jpg
View of Boundary Cone from Mohave Valley, on the Colorado River
Highest point
Elevation 3,432 ft (1,046 m)  NAVD 88[1]
Prominence 750 ft (229 m) [1]
Coordinates 34°59′02″N 114°24′56″W / 34.983788761°N 114.415665406°W / 34.983788761; -114.415665406Coordinates: 34°59′02″N 114°24′56″W / 34.983788761°N 114.415665406°W / 34.983788761; -114.415665406[2]
Boundary Cone is located in Arizona
Boundary Cone
Boundary Cone
Location Mohave County, Arizona, U.S
Parent range Black Mountains
Topo map USGS Boundary Cone
Mountain type volcanic neck[3]

Boundary Cone is a geologic promontory located in the western foothills of the Black Mountains in Mohave County, Arizona.[4] The peak is to the east of the Mohave Valley, northeast of Needles, California, and southeast of Bullhead City. The peak is about 4 miles (6 km) southwest of the mountain community of Oatman and 12 miles (19 km) east of the Colorado River.


Several Indian tribes attach religious and cultural significance to Boundary Cone as well as much of the surrounding landscape. In March 2006, the Bureau of Land Management determined and the Arizona State Historic Preservation Office concurred that Boundary Cone is eligible for inclusion on the National Register of Historic Places as a property of traditional, religious, and cultural importance to several Indian tribes.[5]

Boundary Cone was a prominent landmark for early travelers in this region.


  1. ^ a b "Boundary Cone, Arizona". Retrieved 2012-04-22. 
  2. ^ "Boundary Cone". NGS data sheet. U.S. National Geodetic Survey. Retrieved 2016-08-15. 
  3. ^ Chronic, Halka (1983). Roadside Geology of Arizona. p. 85. ISBN 9780878421473. 
  4. ^ "Boundary Cone". Geographic Names Information System. United States Geological Survey. Retrieved 2016-08-15. 
  5. ^ Federal Register Notice regarding Boundary Cone, October 8, 2008. This article incorporates public domain text from this official United States government document.