“Voyagers in the Vault of Heaven: The Phenomenon of Ships in the Sky in Medieval Ireland and Beyond” – a paper by Michael McCaughran links the Kilnaruane Pillar, Françoise Henry and Seamus Heaney
Via Medievalists.Net, I came across this paper from 1998 this paper (on page 175 of the PDF): Abstract : This paper explores the phenomenon of ships voyaging in the sky.…
Séamus Sweeney 