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Got curious and went looking, this looks like the one: Ex. Yugoslavian military shelter for submarines D117, 21480, Rogačić, Croatia https://goo.gl/maps/imWgU

Got curious and went looking, this looks like the one: Ex. Yugoslavian military shelter for submarines D117, 21480, Rogačić, Croatia https://goo.gl/maps/imWgUufegJoe1ZsGA https://goo.gl/maps/imWgUufegJoe1ZsGA

Keyframe 6y ago
That's the one. Island is relatively small and has interesting military installations on it.
t0mislav 6y ago
Correct! I have been there.