Editing Dinas Emrys (section)

==Actual archaeological findings==
[[Image:Dinas Emrys Gorge.jpg|220px|thumb|right|Archaeologists have speculated that this may be the platform above the pool where the prophecy was revealed]]
[[Image:Dinas Emrys Tower1.jpg|220px|thumb|right|Ruins of what is considered to be an 11th Century tower]]
It has long been known that there is a pool inside the fort, but when the archaeologist Dr H. N. Savory excavated the hillfort between 1954 and 1956, he was surprised to find that not only were the fortifications of about the right time frame for either Vortigern or Ambrosius, but that there was a platform above the pool as described in the Historia Britonum. However, he found the platform to date much later than the accepted floruit of either personage.

Savory described the fortifications as consisting of stone walls between {{convert|2.5|and|3|m|ft|0}} thick, which exploited every irregularity in the rocky hill-top, enclosing an irregular area of about a {{cvt|10,000|m2}} in size. The original means of access was by a steep path on the western side of the hillfort. The present entrance from the north-east is a later addition.<ref>[http://www.cylchblodeuwedd.co.uk/2010/where-the-dragons-slept-dinas-emrys/ Cylch Blodeuwedd: Druidic Grove in North-West Wales: Where the dragons slept – Dinas Emrys] {{webarchive|url=https://web.archive.org/web/20120831040713/http://www.cylchblodeuwedd.co.uk/2010/where-the-dragons-slept-dinas-emrys/ |date=2012-08-31 }}</ref> The walls had been "poorly built of stone two or three times ", possibly inspiring the legend's reference to the building collapsing several times during construction.<ref>[http://www.sarahwoodbury.com/?p=1316 Dinas Ffareon (Dinas Emrys) | Sarah Woodbury<!-- Bot generated title -->]</ref>

The most conspicuous object currently on the hill is the base of a rectangular tower. It is generally accepted that this is part of an undocumented castle built by the princes of [[Kingdom of Gwynedd|Gwynedd]] in the eleventh century.