Technically, the Inchindown oil tanks in Invergordon, Scotland, have the world's longest reverberation, but that makes a much worse title. We tested them with a loud noise and some very sensitive microphones.

Matt's musical experiments:    • World's Longest Reverb: Inchindown Mu...  
Behind the scenes on the Matt and Tom channel:    • Inchindown Oil Tanks: Behind The Scenes  

Thanks to Allan, Alan and Preston for all their help on the day, and to landowners the Bannerman Group for allowing us access!

Edited by Michelle Martin, @mrsmmartin

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