Is there any mention of isthmus, causeways, alignments, sacred islands, Venus pools and megaliths? I dunno, it's all a puzzle.
It's all a puzzle Borry. Perhaps the whole of Britain is a causeway island that was once connected to Calais which I believe means Chalky White. Britain was obviously built as a hermitage by the monks of St Michel. So good they did it twice. Ireland was another causeway island, an afterthought linked to Bonnie Scotland by a Giant Causeway.
A bit like Sri Lanka which is also mysterious and is thought now to have been linked to India by a causeway.https://en.wikipedia.org/wiki/Adam%27s_Bridge
They went in for building on a megascale as well.https://www.youtube.com/watch?v=AhDy7ygZg50https://en.wikipedia.org/wiki/Sigiriya# ... a_Wewa.jpg
There's a palace or a hermitage at the top of this rock. Depends who you listen to as to who, why and when it was built but it was apparently discovered by an Englishman in the nineteenth century.
Nice views from the top if that was what they wanted.https://en.wikipedia.org/wiki/Sigiriya# ... a_rock.jpg
Apart from demented patricidal rulers the local population consisted mainly of Yakkas and Nagars. Yakkas apparently lived in the hills and made iron while the Nagars were snake worshippers. The snake god even kept Buddha dry in a rainstorm by spreading his hood over the saintly gentleman.
However, it would appear that the Yakkas or Yakshas were fairy folk or spirits.
Did I mention the Venus pool? Well, call it a swimming pool if you like but they've got one at the top that never empties. But then they were masters of irrigation as well.
The Naga people of Sri Lanka, were a totemic tribe of serpent worshipers and the word "Naga" literally means "snake" or "serpent" in Sanskrit, Pali and Tamil. Cognates of the word Naga include Nayār, Nair, Naynār and Nāyakar, which are names of various community in South India. The tribe is also known by the Dravidian term Cheran
Funny enough the Gaelic for snake is 'nathair' which is the same word as 'adder' and ar n-athair a tha air nèamh means Our Father which art in Heaven.
Adhar is another word for air or sky while athair-nimhe means poisonous serpent.
Nothing to do with Sri Lanka of course but there may be clues in Borrie's puzzle book.