FANDOM


Castle thunder is an iconic Hanna-Barbera sound effect, most famously used in Scooby-Doo, Where Are You!. The sound is actually that of a tape-echo unit, a device used in recording studios, feeding back on itself.

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.