Mynydd-Y-Garth (Garth Hill / The Garth) is a 307m hill close to the villages of Pentyrch and Gwaelod-y-Garth. At its peak is a 5,000 year old tumulus. It is accessible via Route Des Alpes or via the adjacent woodlands of Coed-Y-Gedrys and Coed Rhiw’r Ceiliog.