@opinionsonus: If the Great Glen Fault hadn’t slipped. The Great Glen Fault is a major strike-slip fault that runs across the Scottish Highlands. The tectonic movement resulted weakened rock that was later easily carved by glaciers. The glaciers followed the fault line and carved the Great Glen Valley, in which, lies the famous Loch Ness. The large tectonic strike-slips occurred between the Devonian and Cenozoic periods, however, minor tremors do still occur. #ukhiddengems #Scotland #History #geology #map