Occurred on December 6, 2021 / Pekanbaru, Riau, Indonesia
Info from Licensor: "Bono waves are a natural phenomenon that occurs in the Kampar River, Bono waves occur due to high tides entering the river, the meeting of tidal and ebb tides of the river, Bono waves are well known in foreign countries, the longest surfing place, Bono waves come with a schedule."