Map of important locations in Northern Isles M16
The Witcher 3 Guide
Key points of Witcher 3 M16 - Northern Isles - Atlas
1,2,3... - Main locations on the map
Points of interest on the map
Important NPC characters on the map
1 – Hidden treasure
The treasure is located on the top of the mountain. To get there you have to defeat Archgriffin (lvl 48). Take the key and the note from its nest. Read the document. The chest is near to the nest, next to two dead soldier's bodies. Inside you will find nothing especially valuable.
Northern Isles - world atlas
Northern Isles are a part of Skellige archipelago. It's a group of few small islands at the northern edge of the map. Most of all you will find smugglers' caches and spoils of war here. You won't find any human settlement here nor will you meet any people, including merchants. There's not even a signpost here that could be used for quick travel.
Enemy types on Northen Isles
Important information related to Northern Isles
Remember about looking after your boat while exploring this territory. Only thanks to it, will you be able to effectively travel between islands. If you destroy it, you can go for the only available boat on this territory - on the island with the treasure and an archgriffin.
In the sea between the islands many chests can be found. You can search them and collect valuable items from there. However, be careful as they are guarded by sirens and ekhidnas.
Watch out for islands on the East of this location. You will find exceptionally strong opponents there - archgriffin on the 48th experience level and basilisk on level 32.