Which beacon is located 2.5 miles south of Hemel Hempstead, Hertfordshire?
Bovingdon stack The Bovingdon stack is a section of airspace to the north west of London where inbound planes to London Heathrow Airport, which is 20 miles (30 km) to the south, are held. It is a busy example of a hold. It extends above the village of Bovingdon and the town of Chesham, and requires the VOR navigational beacon BNN which is situated on the former RAF Bovingdon airfield. At busy times on a clear day a dozen planes may be circling overhead. Other holding patterns serving Heathrow are at Biggin Hill, Kent (BIG - SE Arrivals), Lambourne, Essex (LAM - NE Arrivals) and Ockham, Surrey (OCK - SW Arrivals), where inbound aircraft will normally use the pattern closest to their arrival route. They can be visualised as invisible helter skelters in the sky.
Worcestershire Beacon Worcestershire Beacon, also popularly known as Worcester Beacon, or locally simply as "The Beacon", is a hill whose summit at 425 m is the highest point of the range of Malvern Hills that runs about 13 km north-south along the Herefordshire-Worcestershire border, although Worcestershire Beacon itself lies entirely within Worcestershire.