Stone Wall

 is a structure part craftable by Pathfinders with the prerequisite skill. These parts are useful for the construction of larger buildings.

Summary
Stone walls are the highest tier of wall in game. Stone is impervious to fire, but can easily be destroyed by grenades or other artillery items. Climbing picks can be used to climb up stone structures.Stone walls have 10,000 health.

Building/Configuring
Stone walls have seven types that can be placed. They are: These types can be selected by pressing T when the blueprint is active and the wall is in a valid location and not blocked.
 * Wall
 * Window Wall
 * Doorway
 * Half Wall
 * Sloped Wall Left
 * Sloped Wall Right
 * Stone Railing yes.

Required Skill Trees/Skill points
Stone structures are unlocked with the Esotery of Building skill, at the very end of the Construction and Mercantilism skill tree. 25 skill points are required to unlock them, and they must be crafted in a smithy.