Fallout Vault 15

Vault 15
Vault 15 is hidden in a shed but will be marked on your map and is directly East of Shady Sands and Vault 13.

Some more rats at the entrance which should be simple to kill. Hope you remembered the rope you need it for the broken elevator.

In the Vault you will find more rats and slightly tougher Mole rats. Its hard to see but check the lockers on the wall for items.
The locker you will find another rope which you need to descend to another level also some armour (leather jacket).
Bottom level you will find a Small Machine Gun don't give it to any team NPC members or they will accidently kill you.
Here you have a choice rescue Tandi or head to the Hub after speaking to Ian in Shady Sands.