It is still used for the summer grazing of cattle, and they used to be swum across the 1-mile-wide (2-kilometre), but shallow, Caolas Fuideach (strait) to there from Eoligarry. When cattle were first introduced to the island, they were killed by dehydration. The crofters who left the cattle on the island failed to show the animals the location of the only drinkable source of water on the island, a loch far inland on the island. The cattle thus could not find drinking water and died of thirst.[citation needed]