Halona Blowhole

Halona Blowhole is a rock formation on Oahu's eastern coast where water shoots upward through a lava tube beneath the surface. The seawater gets forced up and sprays out dramatically when waves push through the underground passage.

The structure formed thousands of years ago when Koko Crater's volcanic activity created lava tubes that extended toward the ocean. Over time, ocean waves and erosion wore away the rock and exposed these underground channels to the surface.

The name comes from Hawaiian and means 'lookout,' reflecting how people have long used this spot to gaze across the ocean toward distant islands and horizons.

The best displays happen during high tide and strong surf conditions when water shoots higher and more forcefully. A parking area sits right along the highway, making access straightforward, though stay alert for splashing water and slippery rocks.

A nearby cove was used as a filming location for a romantic beach scene in a classic 1953 Hollywood film that many people still watch today. Few visitors realize they're standing near a spot with this cinematic connection.

Location: Honolulu

GPS coordinates: 21.28220,-157.67600

Latest update: December 7, 2025 20:20