I have been to Camp Stanley so many times and I never realized this training tunnel was located there:
Boxes have been packed and nails stick out from walls where pictures and maps used to hang.
U.S. soldiers are getting ready for a historic move from the front lines to new quarters south of Seoul, South Korea, as part of a relocation plan that has been in the works for more than a decade.
But there’s one important feature they can’t take with them — a half-mile tunnel carved into a mountain that rises above Camp Stanley, which has been home to 2nd Infantry Division units since shortly after the 1950-53 Korean War. (…..)
Training for the possible need to search and clear such facilities is high on the agenda for U.S. and South Korean forces. But it’s about to become more challenging for the 23rd Chemical Battalion, which is preparing to move to Camp Humphreys, about 55 miles south of Seoul, this month. It will retain access to the tunnel, although it’s unclear how that will work without a regular presence on the base. [Stars and Stripes]
You can read more at the link.