Mons Meg

In the early 15th century ever bigger bombards were developed as gunpowder became increasingly cheaper. A particularly impressive example is the gun "Mons Meg" which is still on display at Edinburgh Castle. It weighs over five tons and fired a stone shot of 549 lbs.

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Mons Meg, a medieval supergun of the first half of the 15th century from Edinburgh, Scotland, 2008, colour photography, Author: Lee Sie; source: Wikimedia Commons, Creative Commons Attribution-Share Alike 2.0 Generic license.