This BBC story, Survey turns hill into a mountain, about Mynydd Graig Goch in Snowdonia in Wales sounds like the movie that starred Hugh Grant, The Englishman Who Went Up a Hill But Came Down a Mountain.
Maggie Mountain in the Sierra Nevada
I’ve worked in the Sierra Nevada at Mountain Home State Forest. I could see Mount Whitney. I now live near the Mayacamas Mountains. The thing is just a big hill.
Nullius in Verba 