Mynydd Y Gelli Ring Cairn

Mynydd-y-gelli  Ring Cairn is sometimes referred to as Rhondda Stonehenge. Set within a low embankment this prehistoric site consists of a circle of small stones of about thirty feet in diameter. It is thought there could have been 15 stones of which nine survive. Located off the B4223 near south Gelli to the northwest of Pontypridd and Tonypandy.