I figure this was the correct place to put this. But here we go...
(Written from a guards perspective.)
I have been wondering, because to the best of my knowledge (which isn't much regarding the caves nowadays) there isn't a warning system (I.E. Zenko Bells) So say if a Balrog attacked, or invasion of demonic spider ducks, youd have to spare a player to send out the warning...unless you totally want to b.s. it and make an npc do it. But i think i have figured out a solution.
Plan A: Ok, say somethings going on and you need to A. get backup from outside of the caves, and/or B. Alert everyone else that somethings going. Say you get a split second you could do
Guardsman 1 scribbles down a note, ties it to [insert small message bird here], calmly tells it to report to the dock master and releases [said bird] . Then said bird flies to dock captain who, then reads said message, sounds some type of alrarm, as well as sending a boatsman to the city to set off a bell/alarm there. Which OOCly allows you to Post an IC message in group chat for help/assistance/or to notify.
Plan B: Have a giant horn at the top of Phoenix Castle, that icly would have a small tunnel leading to the surface, so sound could travel. That then allows you to run over and blow on the horn then posting message. Or you can do the whole bird thing, just replacing the dockmaster with Hornsman.
Ok...I think thats it for now
Gonna apologize now for anything i said/did wrong. Was just at work, being bored so i started to think....and yea well...here's about 10 minutes worth of thinking xD