[little sage]

If you go by car, within a few hours' drive of Soraksan and Sokcho there are some caves, Hwanseondonggul near the town of Sancheok, which were pretty cool. First you climb up a mountain, then you enter the cave from up there, and walk on trails through 60+ minutes worth of underground rock formations. If you spend the full hour or so there, you will begin to see shapes in the rock.

On our vacation 2 years ago, along the road to get to the caves, we passed a massive new museum of geology that was not yet finished being built. I'm sure it's completed now, and it looked to be a grand grand place. I should really find out the name of it, if I intend to go back.

Also, somewhere along the coastal highway we passed a North Korean spy submarine-turned tourist attraction which you walk through. The fun never stops in the north east!