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Strike-slip fault, Scotland

The Great Glen is a huge valley, eroded by glaciers more than 10,000 years ago. These glaciers carved the valley below present-day sea level, forming a series of deep lakes. Loch Ness is the largest and most famous of the lakes.

The Great Glen follows a line of rocks weakened by fault that moved between 400 and 300 million years ago.

Scientists have matched up rocks across the fault to show that, during this time, the northern part of Scotland moved over 90 km (60 miles) to the north-east.

Strike-slip fault, Great Glen, Scotland

Great Glen fault, Scotland
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