Loch Awe is Scotland's longest loch and abounds with islands and crannógs. Several of the islands are, or have in the past, been inhabited; there are two castles and the remains of a chapel on the islands. Inistrynich, Eilean na Maodail, Eilean Dubh and Liever Island are all promontories as opposed to islands despite their names. The loch's water levels have fluctuated so some of them may have been islands in recent history, as the promontory on which Kilchurn Castle stands once was.