borealis or miner forty-niner

One of the latest entries on BLDGBlog covers a fascinating and mysterious phenomena made visible by aerial surveying in the form of boreal rings of lighter pigmented, less thriving foliage that occur in the thousands throughout the forest landscape of Ontario.
Unlike crop-circles and similar occurrences that have either very mundane or other-worldly explanations, researchers are discovering a surprising and wholly unexpected account where ancient glaciation has pockmarked the woodlands with electromagnetic fields and the entire area is like a subtle circuit board. I just how that this exploration stays a geological and botanical one, rather than a tool for prospectors, though I suppose the latter could inform the former too.