I've heard all kinds of things about caves... I dug a tunnel over to the cave in the desert and pretty much reversed mined it from bedrock up... The ores weren't any more substantial than the iron and shale I was already getting digging around to start... Other than now I have an extremely fancy multi level staircase heading down to bedrock, what's the big attraction to caves? I know the biomes are all different for ores, desert for iron, shale... Perishton for nitrate... Forest for lead... Does the same hold true for caves?