Azores
Hypogeum
Hyperborea
Thule

https://en.m.wikipedia.org/wiki/Azores

https://en.m.wikipedia.org/wiki/Hypogeum

https://en.m.wikipedia.org/wiki/Hyperborea

https://en.m.wikipedia.org/wiki/Thule

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Ancient burial sites found in Azores

https://portuguese-american-journal.com/pre-christian-graves-found-in-the-azores/