I’m Stuck on mission “Footsteps of Giants [ Go to Vault ]"
i can’t see marker on map and door blocking the way.
Usually enemy’s will spawn behind you and you need to kill them before the door will open.
If not might need to save/quit and retry.
Also, sometimes the game requires you walk all the back from the exploded path to the path that takes you back to the fast travel station. Triggering the save point at the end of the path that drops off into a mobbing area usually causes the objective marker to move to the Eridian Temple Entrance.
Fast traveling back to your vehicle and bypassing walking back can cause that issue.