The easiest way to find out where the diagrams are is to buy the right map. In this case it will be the "Adalbert Kermith's first map" which you can buy from the Blackbough Merchant. Of course you can also look for the diagrams on your own.
During one of his numerous adventures, Geralt got his hands on a map covered with strange markings. He quickly deduced that they indicated the locations of hidden witcher caches and, intrigued by the chance of discovering long-lost crafting schematics, he set out to find them.
Adalbert Kermith's first map
While conducting studies under the guidance of Professor Slavko Atimstein, I happened across four places where carved engravings portraying the sign of the Cat School of witchers could be found. All these pictograms are identical to that which we discovered in the caverns beneath the Temple Isle in Novigrad. I have marked them on this map.
Adalbert Kermith. Adjunct in Natural History at the Oxenfurt Academy.
Series:
Blackbough Merchant
Velen / Novigrad
Enhanced Cat School Gear (Silver Sword)
Velen / Novigrad
Enhanced Cat School Gear (Chest Armor)
Velen / Novigrad
