What Manjanggul offers
As one of the world's longest known lava tube cave systems, Manjanggul's publicly accessible section lets visitors walk through a genuinely striking underground volcanic landscape, offering a completely different kind of Jeju natural attraction compared to the island's more famous coastal and mountain scenery.
Preparing for the cave walk
Given the cave's naturally damp, uneven, and cool conditions, wearing sturdy non-slip shoes and bringing a light jacket, regardless of the weather outside, both make for a considerably more comfortable visit.
Exploring Bijarim Forest afterward
This forest is known for its dense concentration of nutmeg trees, some centuries old, offering a peaceful, shaded walking experience that contrasts nicely with the cave's underground, rocky environment, making the pairing a good balance of two very different natural settings.
Planning the combined visit
Given the distance between the two sites, having your own rental car or arranging taxi transportation makes combining both into a single day considerably more practical than relying on limited public bus connections between them.
Useful Korean
Frequently asked questions
Is Manjanggul cave difficult to walk through?
The publicly accessible section of the cave follows a relatively flat, though uneven and sometimes slippery, path, making it manageable for most visitors, though sturdy, non-slip footwear is genuinely important given the cave's naturally damp, rocky surface.
Is the cave cold inside?
Yes, the cave maintains a noticeably cooler temperature than the outside air regardless of season, so bringing a light jacket or extra layer, even on a warm day outside, is a sensible precaution.
How far is Bijarim Forest from Manjanggul, and is it easy to combine both in one visit?
The two sites sit within a reasonably manageable distance of each other on Jeju, commonly combined into a single day's itinerary, though having your own transportation or arranging a taxi between them makes the combination considerably more convenient than relying on limited public bus options.
Official sources
Time-sensitive details were checked against the original sources below on 2026-08-28.