The Royal Air Force
Treasure hunt
Novigrad suggested level 36 Hearts of Stone 
On the world map
From the journal
Another day, another corpse -- and, the witcher suspected, another document revealing the tale of the deceased's demise. He was not mistaken.
Nicolas Vogel's laboratory notebook described the experiments the mad mage had conducted on harpies and also mentioned a hidden stash of coin. The chest's contents would be no use to Nicolas in the afterlife, so Geralt decided to secure them for himself.
He found the treasure chest atop the ruined tower. After emptying the thoroughly pecked container of its contents, the brave witcher continued on his Path.
