During the course of Dragon Age: Inquisition you have to find quarries and logging stands throughout the different locations to fill requisitions. Including ones to improve Skyhold. And without certain perks, you cannot see where they are located on the map. So having perks to find these can be extremely useful though they do not effect the overall game other than cosmetics. I love getting all the upgrades for Skyhold so this is a little guide of where to find them if you've been searching for ages but haven't comes across them. Or you want to find one quickly without traveling everywhere.