Ghosthunters Season 4 Episode 3 In The Shadow of Snowdonia ( Air Date 1997-02-16 ) Genre Documentary, Sci-Fi & Fantasy category. Overview "Snowdonia is the highest mountain in Wales, set in the midst of a remote and wild countryside, steeped in history. A team of three ghosthunters are at work with members of the local communities, trying to unravel some of the paranormal events that have taken place.".