Killing Pits - this is what the wiki currently states:
"Killing Pits are deadly pits containing iron spikes, and are placed in the grounds of the castle in order to injure any attacking troops which walk over them. Killing pits may be placed anywhere within the white line (build zone) for your castle, and require iron from the stockpile to build. The base cost of a single Killing Pit tile is 100 iron.
To build killing pits in a village castle, Defences Level 2 must be researched.
To build killing pits in a capital's castle, a Sergeant-at-Arms Office must be placed and upgraded.
Killing pits are one (1) tile each in size."
Now that's all good and fine, but it doesn't give the needed details to allow me to decide whether they are worthwhile or not. Questions:
1. How much damage do they do? Is it a set amount, or can each pit kill a single troops as it walks over it (.... would make sense... most people don't come back from a sharpened tree trunk through their abdomen).
2. When they do damage, is it damage over time as a unit is forced to walk over them, or is it a one time damage. Is it a one time damage per unit, or are they used up one at a time as a single unit springs them, and then the pit does not damage the next unit to walk over it?
3. Are they scouted when the castle is scouted? Are they invisable again after being repaired and set again in the same spot, or are they invisable again each time after repair?
4. Does pitch pot damage and killing pit damage stack?
5. Killing pits are holes in the ground with wooden stakes in them - it's unlikley that any iron would be used in one because that material is rare and uneccessary in comparison to just cutting some trees up (I'm talking real world application, and quite frankly the in-game graphic that features wood stakes in a dug out hole, not iron like the wiki suggests). So why do they require 100 iron to make, and then repair each time if they use no iron? I feel the cost should be in wood - either that or the cost of making swords and armour should be reverted to wood instead.... just kidding

And I didn't mean to get carried away - I really just mostly want to know how much damage they are causing, so I can see if they are worth it.