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Perlan Project - Wikipedia
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September 2015 – Soaring
Are there any gliders that can fly over the Himalayas (glider, high altitude, sailplane, mountain flying, aviation)? - Quora
Pergelator: Perlan Project
Windward Performance Perlan II - Wikipedia
Perlan II - Gliders and Motor-Gliders - X-Plane.Org Forum
Economy of Iceland - Wikipedia
Perlan Project pushes envelope of possibility - UND Today
The Perlan II glider, with an est. service ceiling of 90-100,000 ft, current world record holder with a max of 52,172 ft established on September 3. : r/aviation