Thurston Lava Tube

Thurston Lava Tube is an underground cave in Hawaii Volcanoes National Park, roughly 600 feet (180 meters) long, with smooth walls of volcanic rock. The passage formed about 500 years ago as lava flowed through the ground and is open for visitors to walk through today.

The cave formed about 500 years ago during volcanic activity as lava flowed beneath the ground. Newspaper publisher Lorrin Thurston discovered it in 1913 and brought attention to this natural wonder.

The name Nāhuku comes from Hawaiian and refers to the bumps and ridges that mark the cave walls. These features were shaped by cooling lava and represent the volcanic identity of this place.

The cave is easy to visit during daylight hours since artificial lighting illuminates the passage. For visits in early morning or evening, bring your own light source to explore safely.

The entrance is surrounded by thick rainforest with large ferns and native plants thriving in the warm, humid air. This lush greenery creates a striking contrast to the dark gray cave passage within.

Location: Hawaii County

GPS coordinates: 19.41370,-155.23800

Latest update: December 14, 2025 20:04