When Waterfalls Defy Gravity
Some waterfalls flow upward instead of down. When powerful winds exceed 75 kilometers per hour, the air current is strong enough to blast the falling water back into the sky.
This stunning visual trick occurs when a valley or cliff acts like a funnel for intense gales. The wind acts as an invisible wall that pushes the cascading liquid away from its natural path. You can witness this rare phenomenon in places like the Peak District in England or the Faroe Islands. It serves as a striking reminder that fluid dynamics can be completely overruled by high-velocity wind.
Source: Reverse waterfall