How would you like to take a bath in Hell? It sounds like a particularly creative insult – but over in Japan, it’s actually a fairly popular tourist attraction. Beppu, a small city in ita Prefecture, is an onsen town – a resort town built around the presence of hundreds of naturally occurring hot springs. And when we say “hot”, we mean hot – with seven of the pools earning themselves the rather dramatic title of “Hell”. What are the Seven Hells of Beppu?You might think it’s extreme to compare a pool of water to a place known for its fire and brimstone. You’d be right. You might think, in fact,…