'''Note:''' These skill limits do not apply when building small [[stone wall]]s at cave entrances.
Two corners going into 1 corner can result in a "hidden edge" being steeper than 20 making it unable for animal driven carts to walk up. To find out if this hidden edge is steeper than 20 you need to use the [http://en.wikipedia.org/wiki/Pythagorean_theorem Pythagoras Theorem] by taking the two slope numbers and filling in the formulae. You can use [http://www.basic-mathematics.com/pythagorean-theorem-calculator.html this calculator].
== [[Farming]] ==