This is not just a wave.
In the local Malay dialect, “Bono” means “truth”. For the river people in this Sumatran backwater, as truly and surely as the sun rises in the east, they know the Bono will appear on the full moon. It will surge upriver. It will take jungle. It will take earth. Occasionally, it will take one of their own.
Tidal bores are waist-high novelties, hardly worth trekking up a wild equatorial river for. But fuelled by the biggest moon in 20 years, this Bono promises to be different.