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In this episode of The Atlas Obscura Podcast, we visit the controversially named Big Bertha at the University of Texas, the world’s biggest bass drum—once made radioactive by the Manhattan Project.

Our podcast is an audio guide to the world’s wondrous, awe-inspiring, strange places. In under 15 minutes, we’ll take you to an incredible site, and along the way you’ll meet some fascinating people and hear their stories. Join us daily, Monday through Thursday, to explore a new wonder with cofounder Dylan Thuras and a neighborhood of Atlas Obscura reporters.

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