When looking at an Ordnance Survey map, you may come across various symbols and signs that represent different features of the landscape. One common symbol that you may encounter is a red triangle. So, what does a red triangle represent on an Ordnance Survey map? In general, a red triangle on an Ordnance Survey map typically indicates a trig point. Trig points are concrete pillars that were originally used for surveying and mapping purposes. They were strategically placed on hilltops and other high points to provide a reference point for triangulation measurements. Trig points were crucial for accurately mapping out the landscape and creating detailed maps. Today, trig points are no longer used for surveying purposes, but many of them still remain standing as iconic landmarks. They are popular among hikers and outdoor enthusiasts as they often offer stunning panoramic views of the surrounding area. Trig points are also used as reference points for navigation and orienteering activities. If you come across a red triangle on an Ordnance Survey map, it means that there is a trig point located at that specific location. Trig points are usually marked with a metal plate at the top, which may contain information such as the height above sea level and the reference number of the trig point. If you want to learn more about trig points and their significance on Ordnance Survey maps, you can visit the Ordnance Survey website for additional information. They have a dedicated section on trig points that provides detailed explanations and histories of these important landmarks. Overall, a red triangle on an Ordnance Survey map represents a trig point, a concrete pillar that was once used for surveying and mapping purposes. While trig points may no longer serve their original purpose, they continue to be an important part of the landscape and are valued by outdoor enthusiasts for their historical significance and breathtaking views.

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