A cropped version of maxmoran@bluesky.social’s picture of the inscribed stone from Castell Dwyran, with indentations on the top and left edge showing a bit of the ogham inscription circled in blue.
A drawing of the Castell Dwyran stone, originally published in Macalister’s Corpus Inscriptionum Insularum Celticarum vol. 1, but here from Mullen and Woudhuysen, eds., Languages and Communities in the Late-Roman and Post-Imperial Western Provinces, p. 30.
Lovely #StandingStoneSunday picture, this looks like a nice exhibit!
To clarify the inscriptions, the text beneath the cross is in a Latin script. The ogham inscription - an artificial Irish form of Voteporix (see work by @davidstifter.bsky.social) - is just visible around the edge of the stone.