Dirtbag Climber from Uncover S34 E2: Highlander | Dirtbag Climber
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Sep 15, 2025 Mark Serafim, a classmate of Andrew Britt Greenbaum, shares a deep dive into their high school years. He reveals Greenbaum's troubling transformation from a cheerful individual to someone with extremist beliefs. Their conversation highlights the intersections of identity, the painful impact of bullying, and how personal interests sometimes take dark turns. Serafim also reflects on bittersweet memories and the haunting legacy left by his former friend, providing a thought-provoking look at the complexities of youth and radicalization.
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Unknown Climber Revealed As Missing American
- Police matched the man's DNA to a family in Medfield, Massachusetts revealing his real name was Andrew Britt Greenbaum.
- He had been reported missing by his family in 2006 and used aliases like Jesse James while living in Squamish.
Close Father-Son Outdoors Bond
- Hyman Greenbaum described family activities like mountain climbing, tennis, and chess with his son Britt.
- He recalled their close relationship despite Britt living outside societal norms and the law.
Teen Chess Prodigy
- Britt developed into a strong chess player, reaching an 1800 rating by 16 and dominating peers.
- Former classmates recall he beat students quickly and displayed tactical superiority and confidence.