FACTUPDATES™️ on Instagram: "It looks harmless, but even a waterfall just one meter tall can trap and drown a person. When water flows over an obstacle and drops, it creates what’s known as a hydraulic jump, a powerful recirculating current that can pull anything, or anyone, back toward the base of the fall. The force is strong enough to hold a person underwater indefinitely, even when the drop itself looks small and safe. This effect is intensified by aeration (air mixed into the water), which