Mission San Pedro y San Pablo de Bicuñer was founded on January 7, 1781, by the Spanish Franciscan friar Francisco Garcés, to protect the Anza Trail where it forded the Colorado River, between the Mexican provinces of Alta California and New Navarre.
The settlement, located about northeast of Yuma Crossing in present-day California, was not part of the Spanish California missions chain, but was administered as a part of the Arizona missions chain.
The Mission site and nearby pueblo were inadequately supported, and Spanish colonists seized the best lands, destroyed the Indians' crops, and generally ignored the rights of the local natives.
In retaliation, the Quechans (Yuma) and their allies attacked and destroyed the installation and the neighboring Mission Puerto de PurÃÂsima Concepción during a three-day period, from July 17âÂÂ19, 1781. Some 50 Spaniards, including Father Garcés (along with three other friars and Captain Fernando Rivera y Moncada) were killed, and the women and children taken captive. The Indians' victory closed this crossing and seriously crippled future communications between Las Californias province and colonial Mexico, both within the Viceroyalty of New Spain.
Today, only a California Historical Marker identifies the site. The marker is located on Imperial County Road S24, 0.2 mi W of the intersection of Levee Road and Mehring Road/11th St, and 4.4 mi NE of Bard, in southeastern Imperial County.
California Historical Landmark number 921 reads: