There's a new article on Bayvil, written by Prof MPP, Kate Welham and Chris Casswell and published in Archaeologia Cambrensis. It's free to view and download from the Academia web site. Details:
MIKE PARKER PEARSON, CHRIS CASSWELL and KATE WELHAM with contributions by Rob Ixer and Ellen Simmons (2018)
A Late Bronze Age ring-fort at Bayvil Farm, Pembrokeshire
The paper reports on the finds from a dig in September 2014. For earlier blog posts on Bayvil, use the search facility. It's worth reminding ourselves that the work at Bayvil was flagged up by Prof MPP in his September 2014 talks as the possible or even probable location for "proto-Stonehenge", since it was already clear at that time that the radiocarbon dates for Rhosyfelin were not coming out as expected. So the search was on for a location for the "parking up" of all those lovely bluestone monoliths from Rhosyfelin for 400 years or so, prior to removal to Stonehenge. Having drawn a blank at Castell Mawr, Bayvil was the next place on the list. The authors of this paper are a bit coy about this background scenario, saying just this in their introduction to the article:
"An assessment in 2006 by Dyfed Archaeological Trust concluded that this 70m-diameter circular ditched enclosure is probably of Iron Age date but it has also been suggested that it might be a segmented- ditched enclosure — an early type of Neolithic henge (Driver 2007, g. 18)."