Naliyagan Festival in Prosperidad
Naliyagan Festival is Agusan del Sur province's founding anniversary celebration, held in Prosperidad from June 12 to 17 to honor Manobo tribal leader Datu Lipus Makapandong. Founded in 1993, it opens with a Manobo ritual invoking ancestral spirits and features tribal street dancing and a trade fair of local cottage industries.
Agusan del Sur's history is closely tied to the Manobo people, an indigenous group whose leaders governed the interior Mindanao river valleys long before the province took its present provincial form.