When it comes to anti-mainstream surfing spots in Indonesia, there's certainly nothing more anti-mainstream than this surfing spot in Riau Province.
Not on the beach, this Indonesian surfing spot is located on a river, specifically the Kampar River!
What's unique about this river is the Bono phenomenon, aka Bono waves, which are formed when the ocean tide meets the river tide.
The waves created by this natural phenomenon can reach heights of up to 5 meters.
Sheila Silvina