Is this Irish Ogham in the Southwest?

A few years ago somebody commented to me that the “rake” symbol that we see in southwestern petroglyphs could be Ogham writing from ancient Ireland. To address that comment I have made this video. It took me years to make it to Ireland and see Ogham for myself, but that comment has been on my mind all that time. (Obsessive personality? A little.) I hope this satisfies your curiosity as it did mine.