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In this episode of The Atlas Obscura Podcast, we head to a remote region of Russia, to the epicenter of what would become known as the Tunguska Event. On June 30, 1908, at 7:17 in the morning, a firey blue light streaked across the sky above Siberia, followed by a blinding flash and a cacophony of noise that sounded like artillery firing. Today, scientists still debate what happened.

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.

This photo was taken around 1930 of the Tunguska marshes, the epicenter of the mysterious Tunguska Event.
This photo was taken around 1930 of the Tunguska marshes, the epicenter of the mysterious Tunguska Event. Public Domain