Manjanggul Lava Tube

⚠️ TEMPORARILY CLOSED for facility renovation. Scheduled to reopen after March 2026.

Overview

Manjanggul Cave is a 7.4-km-long lava tube — one of the longest of its kind in the world — formed by volcanic eruptions approximately 200,000–300,000 years ago. About 1 km is open to the public, showcasing dramatic lava stalactites, lava shelves, and the world's tallest known lava column (7.6 meters). It is a UNESCO World Natural Heritage site.

Highlights

• World's Tallest Lava Column: A 7.6-meter lava pillar at the end of the walkable section, formed when lava dripped from a hole in the ceiling.
• Lava Stalactites and Stalagmites: Unique formations created by cooling lava drips hanging from the cave roof.
• Constant Temperature: The cave maintains a cool 11–21°C year-round, making it a refreshing escape in summer.

History

The lava tube was formed during eruptions of Hallasan volcano between 200,000 and 300,000 years ago. It was designated a Natural Monument in 1970 and inscribed as a UNESCO World Heritage site in 2007. The public section has been open to visitors since 1983.

Visitor Tips

• Bring a Jacket: The cave is significantly cooler than outside, even in summer.
• Walking Surface: The path can be wet and uneven — wear closed-toe shoes with good grip.
• Duration: 45 minutes to 1 hour.