477K views · 20K reactions | RAF Typhoons on the Mach Loop  The Mach Loop is a set of valleys, situated between Dolgellau in the north, and Machynlleth in the south (and from which the Mach Loop gets its name), which are regularly used for low level flight training, with flying as low as 250 feet (76 metres) from the nearest terrain. | The British Falkland Islands & British Military | Facebook