The fairy hillock of Clip y Gylfinhir (see folklore) at the southern end of Mynydd Rhiw. Image credit: A. Brookes (17.4.2016) thesweetcheat Apr 24, 2016
I'm not surprised they're there. That's quite a strange little hill.
Me neither, although not sure what they make of the radio transmitter.
Love to see that lit up at night. (without the transmitter)
Fairy lights?