Moel y Gaer, Rhosesmor

Moel y Gaer (Welsh for "bald hill of the fortress") is an Iron Age hillfort located on a summit at the southern end of Halkyn Mountain, overlooking the village of Rhosesmor, Flintshire, Wales.

Excavations in the early 1970s revealed a sequence of defensive structures made of timber and several phases of building work inside the ramparts.

Remains of a timber long house on the hill summit have been dated to the third millennium BC and may represent the earliest human occupation of the region.

[2] Much of the archaeological work at Moel y Gaer was carried out in the early 1970s, before the planned construction of a 500,000-gallon storage reservoir on the hilltop in 1979 destroyed a portion of the site.

Also in phase two were rectangular buildings, with four large posts at the corners, the huts laid out in neat rows in a formal layout.