Have got the basics of my entrance sorted out...now they just need some military dwarves as a garrison and something to test it out on besides the occasional kobold thief. Three years and not a peep from the goblins except a lone snatcher that sadly managed to get away
The initial entrance corridor has absolutely nothing except for my fortified bunkers. The goblins go right along that, down a flight of stairs then double back...right over a line of cage traps and weapon traps, then into a bottleneck (which has a camel guarding it from thieves, and further fortifications behind it). Goblins that miraculously make it past the traps will undoubtedly kill the camel but then they have to funnel in one by one through the bottleneck and travel a fair wee distance under crossbow fire to get anywhere that they may cause any sort of threat (I may make a standing melee militia as well, who can stand guard behind the corners where the goblins would be able to reach safety from the crossbows). When the goblins retreat, they've got to go back through the long corridor, whereas the barracks is located directly below both bunkers and the dwarves are just a few tiles away from continuing the massacre on the level above. Lever for the bridges in front of my bunkers is in the main meeting hall, where there's usually an idle dwarf around to pull it quickly
Not that I have a shortage of iron (got a couple hundred bars with all the hematite I've found at my location...I'm already making all my permanent workshops out of iron just for the hell of it
), but goblin blood must flow through my fortress. Armok demands it and so do I.