The Englishman Who Went Up a Hill But Came Down a Mountain is a 1995 Miramax film written by Ivor Monger and directed by Christopher Monger. It was screened in the Un Certain Regard section at the 1995 Cannes Film Festival. The movie is based on a story heard by Christopher Monger from his grandfather about the real village of Taff's Well (Ffynnon Taf in Welsh), Rhondda Cynon Taff, Wales and its neighbouring Garth Hill. Due to 20th century urbanisation of the area, it was filmed in the more rural Llanrhaeadr-ym-Mochnant and Llansilin in Mid Wales.