Just a few feet from the entrance there is a hollowed-out rock with random loot. A grave can be found southwest of the entrance, near the cliff face. Often, there will be a bighorner bull near the grave.
The main room of the mine features several lakelurks. Going up the stairs and down the path leads to a large water-filled cavern with more lakelurks. Under the water, there is a round table with four chairs, four human skeletons in or near a chair and the corpse of a super mutant brute floating at the water's surface. On the table is a deck of cards with two cards dealt in front of each seat, 1 up and 1 down, as if the four skeletons had been engaged in a game of Blackjack.
A dead Jackal gang member can be found in the big hall with a lake. They carry a worn key, that opens the explosive crates on the island in the lake. Two more explosive crates are located in the northernmost dead-end of the cave.
- Pushy - A unique variant of the displacer glove, can be found on a dead Jackal gang member.
- A multiplas rifle - Can be found on the super mutant brute, whose corpse is floating in the lake. The mutant's body can also be at the bottom of the lake, in the southwest corner of the cavern.
There is an exit behind the dead-end but it cannot be utilized. Two markers can be seen on the map while standing inside the cave, but only one entrance/exit is accessible.
The Ruby Hill Mine appears only in Fallout: New Vegas.
- The dead super mutant brute may respawn upon return, but won't be hostile. It will be swimming in place occasionally.[verified]
- It's possible that if any companions follow the player into the water, they can get stuck swimming under the ramp leading down into the water or on the other end of the lake where they can end up half off map.[verified]