Bay of Arauco or Bahia de Araucan, is a bay located on the coast of the

Arauco Province Arauco Province ( es, Provincia de Arauco) is one of four provinces of the Chilean region of Bío Bío. It spans a coastal area of just south of the mouth of the Biobío River, the traditional demarcation between the nation's major natural regio ...

, of the Bío Bío Region of

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

. The bay, is between the mountains of the

Nahuelbuta Range The Nahuelbuta Range or Cordillera de Nahuelbuta () is a mountain range in Bio-Bio and Araucania Region, southern Chile. It is located along the Pacific coast and forms part of the larger Chilean Coast Range. The name of the range derives from th ...

to the east and to the west the

Santa Maria Island Santa Maria () is an island in the Eastern Group, Azores, eastern group of the Azores archipelago (south of the island of São Miguel Island, São Miguel) and the southernmost island in the Azores. The island is known for its white sand beaches, ...

and northwest the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

. It is south and west of the

Bay of Concepción The Bay of Concepción is a natural bay on the coast of the Province of Concepción in the Bío Bío Region of Chile. Within the bay are many of the most important ports of the region and the country, among them Penco, Talcahuano Talcahuano ...

and north of Arauco. The

Bio Bio River Bio or BIO may refer to: Computing * bio(4), a pseudo-device driver in RAID controller management interface in OpenBSD and NetBSD * Block I/O, a concept in computer data storage Politics * Julius Maada Bio (born 1964), Sierra Leonean politicia ...

flows into the bay at its northern end 10 km west of the city of Concepcion. On its shores are the cities of Lota,

Colonel Colonel (abbreviated as Col., Col or COL) is a senior military officer rank used in many countries. It is also used in some police forces and paramilitary organizations. In the 17th, 18th and 19th centuries, a colonel was typically in charge of ...

and Arauco.

Sources

Francisco Solano Asta Buruaga y Cienfuegos, Diccionario geográfico de la República de Chile: Arauco (Ensenada ó bahía de). Pg. 49
Bay of Arauco Arauco Coasts of Biobío Region {{Biobío-geo-stub