Climb Ev ' ry Mountain Climb Ev ' ry Mountain is a in " " . Detailed walkthrough . Head down to Bitter Springs which is located east of the Brotherhood of Steel safehouse . If you follow the road east of the New Vegas Medical Clinic all the way , Bitter Springs should be just to the north near the end of the road , when the road curves north . Talk to Captain Gilles who should be located in a tent behind the infirmary up the slope to the back of the town . Ask her about Bitter Springs and she will mention that someone is picking off her people at night . Pursue the issue , and she mentions that 8 refugees and 3 NCR troopers have been killed , always by a single bullet to the head . She knows the assassin is hiding up in the caves somewhere but she doesn ' t have the manpower to go searching for him . After conversation , the quest marker points to an area slightly northwest of Bitter Springs , almost directly east from Bloodborne cave . The easiest way to reach this place is to head up behind the NCR tents until you reach the second Great Khan supply cave . Facing the entrance , hug the wall left of the cave and head back towards Bitter Springs . You should be unsuccessfully climbing a steep hill . Soon enough you will be able to fall onto a large rock attached to this hill . Get on the rock then continue trying to climb the hill while moving forwards and falling down onto some more rocks . You ' ll reach flat ground after the rock and can head towards the marker . You ' ll find a valley full of some small rocks . Hug the right wall of this valley until you can see a very slim opening in 2 large , gray rocks . Also , when you get to a rock that has a small tree growing on it , look directly to the north and you should be able to see the opening leading up to the cave . Alternatively , an easier way to get to the cave is as follows : North of Coyote Tail Ridge , there is a Great Khan graveyard . Facing west , run up the hill , turn north once you reach the top , and head straight to the cave . If you already discovered the Bloodborne cave , go east from it and search for a Coyote tobacco chew bush . It should be almost on top of the quest marker . If you look up hill , you will see a path going up , this path leads to the cave . Once inside the cave , a Great Khan known as Oscar Velasco will talk to you after setting a few steps into the cave . If you ' re disguised as NCR or have Boone as a companion , he will shoot on sight . Picking the first conversation option will immediately turn him hostile . Asking him if he is the assassin will get him to divulge his opinion of the " refugee camp " . You learn that he is trying to exact revenge upon the NCR for killing his family during the Bitter Springs massacre . Passing a speech check of 50 will allow you to persuade him to either leave peacefully or exact revenge upon the people responsible , the NCR . He will run off to Camp McCarran and undoubtedly get killed , resulting in bad Karma . The best option is to persuade him to head back to Red Rock Canyon . He will give you a key which unlocks the gates in the Great Khan Supply Caches located around the mountains , also resulting in good Karma . The cave has two ammunition boxes with a small amount of . There is also a locked gate at the entrance of the cave ; the key unlocks this , leading to a Great Khan Supply Cache ( the item , not an extra cave ) , some scrap metal , a , another ammunition box and a footlocker containing a small amount of drugs . Head back to Bitter Springs and talk to Gilles again and tell her you have solved her problem . This completes the quest . Behind the scenes . The quest name is a reference to The Sound of Music song , " " ( 1959 ) . Bugs . Even if you ' ve been to the cave on top of the mountain and completed the quest , you ' ll get the reward , but the quest will still be active in your Pip - boy as if you haven ' t completed it . Completing the quest No , Not Much should open up the Captain Gilles ' dialogue tree about Oscar , even if you previously spoke to her and the option to tell her about Oscar was not available .