San Agustin, Coastal municipality in Surigao del Sur, Philippines.
San Agustin is a coastal municipality in Surigao del Sur that combines sea-level areas with elevated terrain inland. The settlement divides into 13 barangays, with Britania, Poblacion, and Salvacion forming the main centers.
The municipality was originally known as Oteiza when established in 1962, before receiving its current name through Republic Act No. 4903 five years later. This renaming represented a key moment in the local administrative development.
The local population of 22,855 residents communicates in multiple languages, including Surigaonon, Agusan, Cebuano, Kamayo, and Tagalog.
The municipality is best explored on foot, with each barangay having its own center and local facilities. The dry season offers the best conditions for visiting coastal areas and accessing the island groups offshore.
The Britania Group offshore comprises 24 islands with white sandbars scattered across Lianga Bay facing the Pacific waters. These islands are known for their natural sandbars that appear at low tide and disappear as waters rise.
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