Cerro Romualdo pictured in the bottom left corner. The National Guard base can be seen to the right of it. The photograph is looking northwest from the top of Bishop Peak.
|Elevation||1,300 ft (396 m) NAVD 88|
|Translation||Romualdo Hill (Spanish)|
|Parent range||Santa Lucia Range|
|Topo map||San Luis Obispo|
|Age of rock||20 million years|
|Mountain type||Volcanic plug|
|Volcanic field||Nine Sisters|
|Easiest route||Not open to the public|
Cerro Romualdo is a 1,300-foot (396 m) hill in San Luis Obispo County, California. The hill is the fifth in a series of volcanic plugs called the Nine Sisters. Until 1964 the hill was officially known as Romualdo Peak.
The hill is named for a Chumash man who received the 117-acre (0.47 km2) Rancho Huerta de Romualdo Mexican land grant from Pío Pico, the last Mexican Governor of Alta California. Huerta de Romualdo means Romualdo's kitchen garden or orchard in Spanish. He sold the land to Captain John Wilson in 1846.
In the 1890s, rock from Cerro Romualdo was used in the construction of the Southern Pacific Railroad.
- "Cerro Romualdo". NGS data sheet. U.S. National Geodetic Survey. Retrieved 2009-07-04.
- "Cerro Romualdo". Geographic Names Information System. United States Geological Survey. Retrieved 2009-12-19.
- "United States v. Wilson". US Supreme Court Center. Retrieved 2009-12-09.
- "The Nine Sisters of San Luis Obispo County". Santa Lucia Chapter, Sierra Club. Archived from the original on June 25, 2009. Retrieved 2009-07-01.