A huge number of uninhabited islands dot the Earth’s oceans. Some of them are so remote that it’s impractical to reach and explore them, while others we avoid to preserve their unique plant and animal life. Some islands, though, we steer clear of for much more ominous reasons.

Gruinard Island is one of these. The isle lies about a half mile off Scotland’s northwest coast, and its rolling hills and peaceful scenery hide a frightening history…

Gruinard Island, located off the coast of Scotland, seems peaceful and quiet at first glance.