AC Valhalla: Wrath of the druids - solving puzzle in Inchroe to get the Lisdurrow trade post deed

AC Valhalla: Wrath of the druids - solving puzzle in Inchroe to get the Lisdurrow trade post deed

I don't know how many times I ran around that building before I realized there was probably some oil to explode first https://store.playstation.com/#!/tid=...