How to get there, did you run around everything? (The Witcher 3: Wild Hunt)
How to get to these question marks?
Or maybe it’s connected with some kind of quests, you never know where the sorcerer’s teleport can bring ... the thing is not stable.
Stimfall
How to get there is a plot spoiler. It looks like you haven't beaten the game yet. Of course, you can get there before the story quest. Tell?
One of them is the mark of the entrance to the cave.
When you go to the cave with Philippa for the stone of the Sun, then you will go out in it.
From the side of the sea, if you sail, you will find a fast transition point. But I couldn't find the second one.
It is shown somewhere in the middle of the mountain, I mean the middle is in height. from the very base to the top, and somewhere inside the mountain.
Perhaps he also missed where the entrance to the cave is.
Stimfall
http://www.witcher3map.com/
This is an interactive game map. You take a boat (I see it in your picture) and sail along the coast until you see the entrance to the cave in the rock. It's right above the question marks. You will reach the place of power (1st "?") in the cave, but no further. Because the passage will be opened by the sorceress in one of the story quests.