History: An estimated 200-600 foot diameter asteroid or comet explodes 3-6 miles above the Tunguska River in Russia, producing a blast of up to 30 megatons, flattening 80 million trees over 830 square miles, and is the largest impact event in recorded history on Earth. (June 30, 1908) [1287 x 950]

https://i.redd.it/ahd5mw0e38711.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/8v5v2a/an_estimated_200600_foot_diameter_asteroid_or/?utm_source=ifttt