In the early 1990s, during the final years of Communist rule, the Bulgarian military secretly excavated a tunnel near the village of Tsarichina — a project surrounded by military secrecy, intelligence involvement, and unexplained claims.

The site would later become known as the Tsarichina Hole.

In this episode of GL Deep Dives, we investigate one of Eastern Europe’s strangest modern mysteries:
a classified military operation allegedly searching for non-human remains, ancient knowledge, or extraterrestrial artifacts beneath Bulgarian soil.

We explore:

• what the Bulgarian military officially admitted
• eyewitness accounts from soldiers and locals
• claims of psychic guidance and remote viewing
• alleged links to ancient beings and lost civilizations
• why the operation was abruptly sealed and abandoned
• what documents remain classified — and why

Was Tsarichina a Cold War–era intelligence experiment?
 A psychological operation?
 An archaeological dig gone wrong?
 Or something far stranger?

This episode takes a fact-first, skeptical but open-minded approach, separating confirmed history from rumor while examining why this case still unsettles those involved decades later.

Ideal for listeners interested in UFO lore, Cold War secrets, Eastern Bloc mysteries, hidden archaeology, and suppressed history.

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