Ok so i got into an interesting situation
Everything was going swimmingly, had a bunch of copper/bronzed up gnomes as fighters, high skill, good training, very rare on deaths (usually only when my gen pop gets caught off guard) - 26 gnomes
Ok, so i know mostly copper is a bit weak so i go digging around for ore
I'm in year 2 atm, spring, everything is pretty sweet, got good stocks of food, alcohol, money for trading, weapons, armor etc. Tinker shop coming along nicely
So i venture down (not that far mind you) and start digging
So i run into a beetle nest that seems to be have spawning for a LONG time. I thought if i attacked with 10 fully outfitted gnomes i'd be fine, but the battle lasts 2 years, and i realise that the beetles have been on a floor below me and spawned, and it spawned into a "cavern" that was already there before i mined into it.
So i start fighitng the beetles, and i quickly realise theres so many beetles that i can't even count. I think i ended up killing 20-30 beetles and they just kept on coming and waving me until all my gnomes were decimated.
So is this supposed to happen when you first run into beetles? Was i unlucky that a beetle spawned in a cavern a long time ago and then started making tons and tons of beetles without me knowing about it until i dig down there aeons later?