About 130 oak trees were used in its construction. There have been four such barrels in history of Heidelberg.
More: https://thetravelbible.com/mysterious-archaeological-finds/
This puts the Meaux (pron. Meeks, I think) & Co. beer flood of 1814 into more perspective.
Long, long ago, British and Northern Irish classwork jotters had charts on the back, listing measurements. Lots of these measurements were so outdated as to be useless - I still remember rod, pole and perch - and included liquid volume, meaning firkins, barrels, pipes, tuns, butts etc. (Funny how so many of these sound vaguely rude in the 2020s...)
More here (1) (2) if interested.
The German barrel in the OP image and the vat mentioned in the beer disaster weren't listed, probably because they were, as we say now, right off the scale.
They certainly give an idea of how much beer was consumed in their era.
Fun fact, you see the area above it that's enclosed by railing? Yeah, that's for dancing. That's a little dance area on top of the barrel.
