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Tagsufo
1 place carries this tag, across every kind and continent it appears in.
🇸🇪 Sweden · Submerged site
Precambrian natural (pseudo-claim: Pleistocene Atlantis) · Natural / Pseudoarchaeology (claimed Atlantis / Nazi)
2011 Ocean X 60 m circle at −87 m in Bothnia claimed as UFO/Atlantis — ROV sampling proves Precambrian sandstone with glacial striations and pluck scar, not cut city.