Castle Dome Peak, the high point of the range, is a prominent butte and distinctive landmark.

Early Spanish explorers called the same peak Cabeza de Gigante, "Giant's Head.

[3][4] In addition to silver and lead, the area is rich in numerous other minerals, including zinc, copper, gold, and many others.

[7][8] Castle Dome Landing was the port and supply point nearby on the Colorado River.

The region is known for striking combinations of cerussite, fluorite, vanadinite, wulfenite, barite, and mimetite, as well as galenite and anglesite.