After exploring extensively hundreds of caves on half a dozen maps, getting three characters from beginning to pre-hardcore top stats and gear, I found a dreaded Explosive Trap. I had a torch in hand, looking, saw the trigger, and just as I changed to dirt blocks to start building a little bridge over, to make darn sure I would miss the trigger on the way down, a bat smacked me and down I went - onto the trigger. I so hoped it would be a dart trap I hadn't seen yet - but no, it was explosives. Having never experienced the explosive trap before, I was - not prepared. Almost peed my pants. That's an impressive explosion. Not even going to bother looking for the coins (probably almost 2 gold) I dropped. So glad I play easy mode, so that's all I lost.