The Mach Loop situated in west-central Wales, stretches between the towns of Dolgellau to the north and Machynlleth to the south. It serves as a designated low-flying training area for the Royal Air Force (RAF), frequently hosting fast aircraft maneuvers.
The area is mapped out for routine operational low-flying training by fast jets and Hercules transport aircraft. The training area is popular among aviation enthusiasts and photographers who come to watch and capture images of the aircraft flying through the valleys.
The Corris Craft Centre serves as an excellent vantage point for observing jets utilizing the Mach Loop. It offers an unobstructed view of the aircraft, providing a flat and accessible panoramic perspective for spectators hoping to witness the aerial maneuvers. Several elevated vantage points offer alternative viewing locations, with one notable spot being Bwlch. Situated roughly five miles east of Dolgellau along the A470 road leading to Dinas Mawddwy, Bwlch provides a higher vantage point for observing aircraft in the Mach Loop.
The Royal Air Force publishes a timetable of when the Tactical Training Areas may be in use, but it is not always reliable in determining whether low-level flying will take place on a specific day or time. It is important to note that schedules can be unpredictable and can change at the last minute. Therefore, it is recommended to pick a suitable date, go to one of the viewing spots, and hope for the best!