When digging underground, how does one determine whether you have just entered a mineshaft, a dungeon, a "stronghold" (?!), or just a random fucking hole in the ground?
I have so far discovered just one chest, very early in my travels, next to a monster spawner that I was unaware could be destroyed. I'm sure I've entered other areas that contained chests, but I didn't know what was what... I think I can tell a mineshaft from all the broken down wood and train tracks everywhere, but are those mineshafts ALSO a dungeon containing a chest somewhere?
