reply to post by Misterlondon
Nexus Magazine did a story about these things a few years ago. Cant remember much about it other than the article said they cauldrens were starting to warm up.
How do they know when a thing that has never been found starts to warm up?
According to the article, a team of scientists had gone to the region, found these things and noted what the OP described. They also noticed the metalic structures were warmer than the sourrounding ground to a level that could not be accounted for sunshine alone.
checkout nexus magazine for the article.
As the saying goes, the void of information on the subject speaks volumes.
I'm not accusing the OP of plagiarism, but the similarities between the OP and the article are uncanny.