How to get to your home? (Assassin's Creed: Valhalla)

Hello to all Negro Vikings.
Such a moment, the plot is all passed, I finally decided to open all the points of activity on the map. I decided to start from the first and last location, since both are in Norway. In the Ryugjafulke location, there is a place called Heilbur. This is our ancestral home, the place where the prologue for our genderless young Eyvor begins. And in this place, a treasure is hidden in a cave, but in addition to it there are a number of green marks, interacting with which Eyvor says something, remembers, reasoning. And one of the marks is highlighted in the main building, but I can't go there, because I can't find the entrance. Everything is closed, there is nothing to break or blow up, or I just hammer into the balls.
Maybe someone was in this place and figured out how to get into this building?
I am attaching a screenshot with a proof tag.