Scavenger Hunt: Griffin School Gear Upgrade Diagrams - Part 4 Witcher 3: Wild Hunt Quest

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.

Edwin Greloff's fourth map

[the writing on the map is smeared with dried blood, cannot be read]

[addendum] Map ain't worth shit. Only thing I found were some griffin symbols scratched on the walls. Can see we're not going to get anything worth near enough to pay back the debts that dandy doctor wracked up with us. Good thing he's worm food now. But maybe it would be worthwhile to loot that tomb under Crookback Hills? I doubt our doctor friend would've wasted his time just running around looking for primitive drawings - there's gotta be some treasure about.