Manawaiopuna Falls, 400-foot waterfall in Hanapepe Valley, Kauai, Hawaii, US.

Manawaiopuna Falls is a 122-metre waterfall in Hanapēpē Valley on Kauaʻi, dropping from a rock face in a single plunge. It lies in a remote, forested valley reached only by air, and it is also known as Jurassic Falls.

The waterfall became widely known after appearing in multiple scenes of the 1993 film Jurassic Park. That movie appearance brought international attention to what had been a little-known natural feature.

The falls are also called Jurassic Falls, after their role in the background of several scenes in Steven Spielberg's 1993 film Jurassic Park. That film connection, rather than any recorded Hawaiian tradition, is what most visitors associate with the site today.

The falls can only be reached by helicopter, and landing near them was forbidden until 2009, when Island Helicopters received permission to land a limited number of times per week. Book with an operator holding that permit; flights are weather-dependent.

Landing near the falls was forbidden until 2009, when Island Helicopters received permission to set down a limited number of times per week. Before that, pilots could only fly past the 122-metre drop in Hanapēpē Valley.