<p>Just in time for Halloween, we bring you the (mostly) true ghost story of a dank cave and an earnest monk who brought the nation’s first doomsday cult to Philadelphia. Join The Why’s Shai-Ben Yaacov and Kelsey Hanson on a journey through Wissahickon Park to the Cave of Kelpius.</p>

Just in time for Halloween, we bring you the (mostly) true ghost story of a dank cave and an earnest monk who brought the nation’s first doomsday cult to Philadelphia. Join The Why’s Shai-Ben Yaacov and Kelsey Hanson on a journey through Wissahickon Park to the Cave of Kelpius.

When a real-life doomsday cult built a cave in Philadelphia

There’s more to every story, if you take the time to tell it. Get to the “why” behind the issues that matter in the Greater Philadelphia region with hosts Annette John-Hall and Shai Ben-Yaacov. Each episode, they’ll pluck one local story from your feed and break it down.

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When a real-life doomsday cult built a cave in Philadelphia

When a real-life doomsday cult built a cave in Philadelphia

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