"Stone House of the Sun"

[Debby ♥Many Nations♥]

Grianán an Aileach - ("Stone House
of the Sun") - the massive site on the
summit of Grianan Hill outside Derry
City in Co. Donegal, is the supposed
burial site of Lord Nuada, high king of
the Tuatha de Danann

[Blue Dragon]

Druids were there at Tuatha de Danaan so good guess was that had something to do with this site here