They put up a fence to stop people like me. But they also moved the access point.
Subway entrance for normal people.
A Korean urban explorer said this looks like a missile silo. That's not wrong.
Please remember that these photos are all copyrighted to me. If you want to use
them in any way, there's a 90 per cent chance I'll give you my permission, and be able to
give you a copy with a higher DPI.