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« on: December 09, 2012, 09:33:04 pm »
This wasn't my first fortress but I was still a bit new to the dwarf fortress world. My fortress had started with 1 entrance guarded block by doors and had fortifications and a level above where archers could shoot people around the tower. I still wasn't very good at training good archers and the enemy's archers were always more powerful I then decided to use the river on my map to create a second passage entrance to my fortress.
This entrance was going to have a drowning trap...
I was in a temperate area and in the winter the river would freeze solid so while it was frozen I built a chamber beneath it and I dug through the frozen river to create some channels above the chamber so that in the other seasons when the river flowed the room below would fill up with a store of water. I then created a path that would go down beneath the chamber as shown in my fail side on perspective drawing. I built hatch covers going from the chamber to the hallway beneath. It was all attached up with levers and I used bridges so that when invaders went in I could close the bridges above the ramps and trap them in. I would then release the water stored above and drown them then I'd filter the water as I drained it from the hallway into my flood plains below.
So I got my first attack...
It was just a small ambush of goblins. So I sealed off the other exit so they would have to path through my drowning trap. I locked some dwarves in the control room so they couldn't leave and I could pull the lever at the exact right time. I watched and I managed to catch all of the goblins in one go and I drowned them all. This felt really rewarding.
Later I got a siege and I thought I'd use the trap on them too, however... They had brought some ogres with them. Ogres are building destroyers and instead of travelling through my trap they decided to break down the doors to my first entrance. Once they were in I couldn't stop them and I found out that my design was terrible and they were able to rampage through my fortress breaking the doors as they go. My last person was one child that I had locked in a bedroom and they eventually found her and that's how my fortress died
_ floor tiles
- hatch cover
X walls/dirt
~ water
\ & / ramps
________ _______
XXXXXX~~~XXXXXX
___--XXX_--_XXX--___
XX\_____________/XX