Catfoss is a halmet in the East Riding of Yorkshire, in an area known as Holderness. It is situated approximately 4 miles (6 km) west of the town of Hornsea. Catfoss Lane, between Catfoss and Brandesburton, is the location of the former RAF Catfoss, an airfield which is now home to a variety of businesses.
The airfield was opened in 1932 for an Armament Training Camp. A small number of fighters were posted there at the start of the Second World War, before the airfield was rebuilt as a bomber station. It closed in November 1945. The site was re-opened in 1959 as the site for the PGM-17 Thor ballistic missile. It closed again in 1963.
Parking is easy, very close to the cache, but the ground is uneven and not suited to disabled access. Children and adults should be able to find it fairly easily but beware of the nettles!