UK: A Snowdonia peak has leapt into the ranks of “super-mountain” after amateur surveyors found its height to be 1.8m (about 5ft 11in). The discovery takes Glyder Fawr in the Snowdonia National Park up from 999m (3,278ft) above sea level to 1000.8m (3,283ft). That makes National Trust-owned Glyder Fawr Wales’ fifth “super mountain”.
Enthusiasts scaled it with GPS equipment in an attempt to “find” the extra height to make the grade.
Ordnance Survey usually measures the height of a mountain using a “photogrammetry” method where detailed aerial images are taken to create 3-D images of the countryside. The method is not detailed enough and can be 3m higher or lower than the correct height.
The Glyder Fawr measurements were taken by trapping a GPS antenna to the side of the summit rock. Signals received from satellites orbiting 22,000km (13,670miles) above the earth were then used to calculate a more accurate measurement.
“We are extremely pleased that G & J Surveys have gone to so much trouble to ensuring a correct measurement for Glyder Fawr,” said Emyr Williams, Director of land management with the Snowdonia National Park Authority.
He said the new measurement would mean “new obligations” for the park authority from a land conservation and management perspective.“The “challenge” would be to ensure the area’s special qualities will be carefully protected,” he added.
Rhys Evans, the Snowdonia manager for the National Trust, said the new height was a “significant announcement” that would raise the mountain’s status. “It will also provide a welcome boost to the number of visitors to the area, which will hopefully have a positive impact on the local economy,” he added.