Sir, we bow to your ingenuity …

Truth be told, we have absolutely no idea what this YouTube description/title says, but we don't really care — hidden beer fridges are a universal language. It appears the temp beneath the ground is what would keep the brews so chilled? Hell-if-we-know, though. So let's just give it up to this brilliant German hobbyist who's created the greatest engineering feat known to the beer-loving man. 

Salute!