Where do I find the keys to the burning hut in the Hinterlands?

Question

I found a burning hut in the Hinterlands with a locked door:

I looked around the area, but I couldn't find any keys nearby. This hut is also not part of a quest I found so far.

The location of the hut on the map is:

Where do I find the keys and how do I open that door?

Answer 1

You don't need a key; a rogue can pick the lock. My Herald is a rogue and opened the door; if you're not, try Varric.

Answer 2

If there is a lock mark on the map, then you will be needing an inquisition perk, in secret category, I think it is called fine hands something.