As above so below.
Water as transport between dimensional realms. By taking in water by drinking we are literally taking in life, water, the medium, the event horizon between the realms, is within us.
The journey below, to the underworld. Caves were obvious entrances to the underside, for the Celts there was as much going on down there as there is up here. But for the Celts it was water that was sacred, and water held the key to transporting to the other world, it was pools and lakes especially that held the key to transporting between realms. The water, rather than being an entire body as we think of it, was the film, pass through the film, the surface, the event horizon, and you pass to another world, the underworld.
Lady of the Lake:Inherited from even more ancient sources the Arthurian legends were pivoted around the mysterious lady of the lake, with the inference that it is her, not Merlin, who bestows power on Arthur as it is from the Lake the already mighty Excalibur is borne. The sword has been residing in the other world. When Arthur was dying, he was taken by the ladies of the lake away by boat, his passage via water ensuring that he reached the underworld before he mortally died, thus keeping him alive.
Votive offerings of all kinds were offered into sacred water in all cultures. The Celts especially were found of despatching swords and crowns into the other world via the medium of the water, the surface being the 'event horizon' between the two.
Christians use baptism to represent the same ideas.
Stargate, Waterpool transportation device.
Water as mirror.At Stonehenge, they do not understand where the circular ditch fits into the puzzle.
If the ditch is filled with water, the observations of the stars can be made using the water in the ditch as a mirror, making it a far easier method for the observer. Observing them through water, does that add a touch of the other realm to them as the light of the stars has passed via the magical water surface? Is the observation now magical, is the action actually happening below ground? Avebury also has a ditch/moat, could this also have been filled with water to provide an astronomical scrying mirror for the stars of the other realm?
Or better still; new theories on the enormous Azteca city scape planetary observatory at Teotihuacan suggest the entire complex of pyramidal temples was purposefully flooded, to provide a mirrored surface.
The bank/ditch at Stonehenge could have been there to flood the entire circle creating a water pool for the whole circle to stand out of, thus making the already magical stones part of an huge astronomical observatory and magical scrying pool, reflecting not only the stars, but the structure of the stones as well.
Scrying pool, 'seeing mirror'.Galadriel's Scrying Pool.which changes the destiny of Frodo who looks into the pool.
The Taj Mahal:Imagine the exact same building, all in Black, on the other side of the river. Twin reflecting black and white palaces, each the opposite of the other.
Legend of the Black taj.
http://www.agraonline.co.in/tajmahal_black.phpWashington monument:Ultimate phallic masonry, piercing the female pool. Neat capstone atop the visual pyramid of the lake. Check previous posts on Paris to see them use long rectangles to visually represent a pyramid. Presumably that is the prol end of the lake, to give you the impression that you are the bottom of a large pyramid, with the far object the capSTONE EYE on top, unreachable to you the viewer.