For us, there's really only two places where you should expect planes to be. Either at the airport, or in a plane museum. Maybe in a harbor if they're a seaplane, but that's about it. Certainly not buried under a foot of sand at a remote beach in Wales. A place so unexpected that no-one even thought to look for it there for 70 years.
The plane itself actually crashed there in 1942 during World War II. The pilot did not escape the wreckage, and the Lockheed fighter was left there to be covered by the sand and sea. It wasn't until the last few years that storms stripped the sand from the top of the wreckage, and the tides exposed the ancient aircraft. One minute it wasn't there, the next it was.