On Hallasan today, you climb on raised wooden boardwalks with bright trail signs telling you to protect the fragile alpine ecology. It’s easy to feel like you’re moving through a carefully managed, peaceful sanctuary.
But just beyond the edges of those steps—down in the thorny mid-slope brush—the mountain holds a different kind of fragility. You’re walking above ground where South Korea spent decades trying not to look.
To understand how this volcano became a slaughterground, go back to the autumn of 1948. Jeju was caught in a violent political uprising, and government forces responded with a policy meant to empty the interior. People in the mid-mountain zone were treated as suspects—villages were raided, homes were burned, and entire communities were pushed toward the coast.
Back then, the coastline was for fishers. The interior supported farming villages scattered around Hallasan’s foothills. Suddenly, that middle band of the island became a trap. Fleeing downslope meant crowded detention, interrogation, and fear. Staying meant the soldiers could come for your house. So families grabbed what they could carry—rice, blankets, whatever would keep a child alive—and fled upward into colder, harsher elevations.
The flanks of Hallasan are thick with broadleaf forest growing out of jagged lava rock. And hidden under that forest are lava tubes—deep, black caves formed when the mountain bled and cooled. Those caves became refuge. Entire families went down into the dark.
Survival meant silence. A fire could betray you to patrols scanning ridgelines for smoke. Food ran out. People ate what they could—raw potatoes, whatever they could forage—and melted snow when they had to.
The patrols were relentless. To make sure there was nothing to return to, they erased villages from the slopes—burning homes down to their foundations. Today, these are remembered as the lost villages. If you step off-trail in the mid-mountain, you might see what looks like a mossy pile of stones and assume it’s an old agricultural marker. Often, it isn’t. It’s what’s left of a house, swallowed by ferns and vines. Hallasan didn’t just take bodies. It absorbed the outline of a society that was forced off the land.
For a long time afterward, public discussion was suppressed. Survivors learned to keep their grief private, even as they lived under the mountain and looked up at the snowline.
This is why the red camellia became a symbol of Jeju’s 4·3—dropping whole and sudden, the way the losses here came.
So when you stand at the summit crater lake and the island opens out below you in green folds, the beauty isn’t pure. The forests are lush, in part, because human habitation was violently removed and nature reclaimed what was left behind. And down on the mid-slopes, in the shadows just beyond the boardwalk, the stones are still there—quiet, mossed over, and stubbornly real.
