The Great Glen is a long valley. 
The Great Glen is a long valley. 

The Great Glen is a long valley in Scotland. 

The Great Glen is a long valley in Scotland. 

The glen follows a giant crack in the Earth. This crack is called the Great Glen Fault. 

Many people have used this path through history. In the 1700s, the glen was very important. It helped control the Highland clans during the Jacobite risings. Towns like Fort William and Fort Augustus were built here. Fort George sits just northeast of Inverness. In 1896, a railway was built. It ran from the south to Loch Ness. That railway closed in 1947. In 2002, a new path opened. It is called the Great Glen Way. 
Today, there are many ways to travel the glen. You can drive on the A82 road. You can also use the Caledonian Canal. This canal uses the lochs as part of its route. The Great Glen Way is a long path. Walkers, cyclists, and canoeists use it. 

Even though the glen is beautiful, the Earth moves here. Small earthquakes happen near the Great Glen Fault. Engineers must plan for this seismic activity. They must design things to stay safe. For example, the Kessock Bridge has seismic buffers. These buffers help the bridge during movements. 
The Great Glen is a massive valley in Scotland. It is also known by its Gaelic names, Glen Albyn or Glen More. Glen More translates to the "Big/Great Glen." 
The shape of the glen is determined by a geological feature called the Great Glen Fault. 

A large portion of the glen is occupied by water. A series of lochs, or lakes, sit within the valley. These lochs are connected by rivers that flow in a sequence. From the northeast to the southwest, the water features follow a specific order. First, the River Ness flows into Loch Dochfour. Next, the water moves into Loch Ness. The River Oich then connects Loch Ness to Loch Oich. Following this, the water flows into Loch Lochy. The River Lochy then carries the water into Loch Linnhe. 
Travelers have used this glen for many different purposes throughout history. During the 18th century, the glen held great strategic importance. It was a key area for controlling Highland Scottish clans during the Jacobite risings. To maintain control, several towns were established in the glen. Fort William sits in the south, and Fort Augustus sits in the middle. Fort George is also located just northeast of Inverness. 
Transportation methods in the glen have changed many times over the years. In 1896, the Invergarry and Fort Augustus Railway was constructed. It ran from the southern end of the glen to the southern end of Loch Ness. However, the railway was never extended all the way to Inverness. The railway eventually closed in 1947. Today, people use the A82 road to travel through the glen. The Caledonian Canal is another major route that uses the lochs for passage. While the canal is navigable, the rivers connecting the lochs are not.
Modern visitors have many ways to explore the landscape. In 2002, the Great Glen Way was officially opened. This is a long-distance route designed for walkers, cyclists, and canoeists. It consists of various paths, such as forestry tracks and canal paths. These paths link Fort William to Inverness. 

The Great Glen remains a connected system of land, water, and history. It links the northeast coast of Scotland to the west coast. The watershed, or the line dividing water flow, lies between Loch Oich and Loch Lochy. This complex system of faults, mountains, and waterways defines the Highland region. It continues to be a place where geology and human activity meet.
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