I think the Heart has been validated. At least to me it has. Speaking of the Ecclesia, the way those words are all grouped together to me is more like someone trying to write a paragraph instead of pointing to disparate points for some geographical area. In short the Heart stone is for a set of features that are pretty close together. For example, and this is just my personal take, which is probably wrong but I'll post it anyway even though lots of much more intelligent people have put the stone maps in other places and made it work it out. In short it can fit a lot of places. It's interesting that a lot of the "clues" mention a Sphinx. I believe it's holy ground to the natives that lived there and that it was likely always holy since time immemorial. Whomever wrote the Ecclesia clue was validating that the site was holy. Perhaps not Christian holy but holy which leads me to wonder if they weren't trying to convey that the area was sacred to some particular peoples and that they had worshiped there or considered it holy.
Now, with regards to the Sphinx. Several of the folks involved in the hunt back in the good old days when the trail was much fresher said there was a natural face, or Sphinx, or Horse, perhaps all of them. The Latin Heart tells us to notice the triangle. There is also the notation of a "cave" right beside the "Triangulum" along with the Fornix or throat/gullet. Perhaps the Latin heart is telling us to pass by the religious place with the triangular cave by the throat or gullet and then get on our knees and pray for sun, perhaps crawl through something. Beyond that lies the cave of gold close to the bottom ( Barathrum).
I have to admit I really used to poo poo the very idea of the stones but now that I have learned more there is an off chance there is something to them. I'll post a picture of my Sphinx along with a few blown up and grainy close ups of a horse head, a square rock with one corner longer, a Spanish cross starting the word "Tina" which is Spanish for "tub" or "basin". Perhaps the word Tina means a water supply. I do not know, yet. I will also post a blown up picture which I believe shows a passage or a hole through an outcrop behind this feature, which could in fact be the area for the phrase "Oratum Solis" or "Ask/Entreaty/pray for light/sun". In which case the word "Taedea" would mean to "light a torch" or perhaps "there is light on the other side of the tunnel" and to not be scared and beyond that is the "Caverna Aurum" or the cave of gold.
It's all a bit too much like an Indiana Jones movie but a great deal of fun trying to figure it out.
In any event here are a few images of what I really think at the time of this writing might in fact be the area the Latin Heart is speaking so much of with just a few words.
The Sphinx
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Noto Triangulum (In the non zoomed image a rock wall of sorts is visible)
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Square rock with an elongated corner over a void. With an X on it. Probably been cleaned out.
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A Horsey Head
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Jesuit/Spanish/Alien Cross forming the T of the word Tina
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The passage or tunnel behind this site which one must kneel/pray/beg or entreat for sunlight.
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I should probably also man up and apologize to the user "Old", or Lynda. I hope she is well and perhaps Travis Tumlinson was a straight shooter. I think the stones to him were more of a curse than any sort of boon and perhaps the whole site is cursed. I am sorry Lynda when you read this.
Please do continue folks. Makes for good winter weather conversation and I hope everyone is having a nice night!