Edvin was built in 1952 and was a huge, top-secret defense-facility
with 270 rooms and 4000 square meters that was blasted out of the
small mountain. Edvin was built to withstand a 500kg bomb, it had
its own power- and water-plant and it had protection against
radiation. The facility contained two floors and its gate was large
enough to swallow trucks.
A sketch of the inside (from BT, the newspaper)
What the inside looked like (from BT, the newspaper)
In case of war, this was the place from which "Älvsborgs
län" was supposed to be ruled. Today the facility is
"de-militarized" and it’s closed, sealed and partly filled
with concrete.
The former entrance
The cache is placed in a crevice and is a 1.2L Curver box that
contains from the start:
Log book, Pencil, Geocaching instruction sheet, Lanyard, Fuse,
Memorymodule, Plastic character.