Skellige last 2 question marks (I can't find them)

[DeadInside]

Can anybody help me? I have finished all question marks, quests and so on in Skellige, but these two i can't found (on mountain top there is nothing).

So it must be inside mountains in some dungeon. There is only one access to the mountain:
http://witcher3map.com/s/#6/-2.361/-20.555/m=-2.416,-21.841
*I want find two above ('Hidden tresuare' and 'Place of power')

When you enter on the right side is top path (you must jump on the edge to climp up) with ghosts of warriors, but on the end brick wall block path to big room/complex. No way to interact something. Is that part of some quest what i can miss or is there anorher path or it's a bug?

I hope it isn't the bug because i can't move on thanks to bug with Vernon Roche.

Screenshot or video would be best, thank you :)

[Tomas Mac Mordain]

These are part of the main quest. You actually exit from that cave at a point much, much later in the main quest. The place of power will be accessible on the way. It's inside the cave as you suspect. Afraid you need to get somehow get past the Roche bug for that.

[DeadInside]

Originally posted by vile zergling:

These are part of the main quest. You actually exit from that cave at a point much, much later in the main quest. The place of power will be accessible on the way. It's inside the cave as you suspect. Afraid you need to get somehow get past the Roche bug for that.

I knew it is a quest, thank you for help :) Now i can sleep well untill they fix the Roche bug.

This bug (no script cut scene before I enter that cave):
https://www.youtube.com/watch?v=3b2Ss9qFhf4

CD project wrote they are working on that before few days, so I started doing that question marks (more than 200 QM in 2 days) and now i'm done.