Dulce Base legend’s early cultural antecedents

Record summary

The Dulce Base tradition alleges a secret underground human–nonhuman facility beneath Archuleta Mesa, but its identifiable roots are mainly in later UFO narratives rather than a documented 1960s incident. It can still serve as a comparison lead for anomalous-place traditions that retroactively attach secrecy, military activity, and local geography to an area. The scope connection is weak and requires careful chronology: prominent claims emerged after the requested period. No reliable evidence verifies an underground base, and the story is generally treated as legend, conspiracy theory, or folklore.