Fortification Hill

Fortification Hill

About 18 million years ago a tectonic upheaval began that profoundly marked the present Lake Mead NRA landscape.

Thirteen million years ago, the crust around the Lake Mead area was stretched and thinned so iron and magnesium-rich magma and basalt, poured out of the ground and covered the landscape. The darker lava produced many of the black volcanic flow-capped mesas, such as Fortification Hill and Callville Mesa, seen in many parts of Lake Mead National Recreation Area.

Mineral-rich fluids trapped in older rock were mobilized when hot magma was injected into them. These hot, hydrothermal fluids percolated up through some of the igneous rock formations, including the Paint Pots pluton at the base of Fortification Hill, imparting their beautiful coloration!

Area Map


Fortification-Hill-Small-Combined-Map

Photo Gallery


 

Contact the Park

Mailing Address:

601 Nevada Way
Boulder City, NV 89005

Phone:

(702) 293-8990
This is the number for our Visitor Center, open daily, for assistance.

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