Coordinates : 49 ° 42 ′ 54 ″ N 2 ° 11 ′ 10 ″ W \ / 49.71500 ° N 2.18611 ° W \ / 49.71500 ; -2.18611 Lager Borkum was a Nazi concentration camp on Alderney , in the Channel Islands , named after the East Frisian Island of Borkum .
Coordinates : 49 ° 42 ′ 54 ″ N 2 ° 11 ′ 10 ″ W \ / 49.715 ° N 2.18611 ° W \ / 49.715 ; -2.18611 Lager Borkum was a Nazi concentration camp on Alderney , in the Channel Islands , named after the East Frisian Island of Borkum .