The Great Glen Fault is a major geological feature in Scotland, running approximately 100 kilometers from Inverness in the north to Fort William in the south. It marks the boundary between two geological regions: the Grampian Highlands to the south and the Northern Highlands to the north. This fault is a result of tectonic activity and is part of the larger Great Glen geological structure. The fault is significant not only for its geological implications but also for its impact on the landscape. It has created a series of lochs, including the famous Loch Ness, which lies along the fault line. The Great Glen Fault is a prime example of how tectonic forces shape the Earth's surface over millions of years.