Cave of the Abaddon

The Cave of the Abaddon is a location in the Divide in the Fallout: New Vegas add-on Lonesome Road.

Layout
This consists of a long cave formed mainly by collapsed buildings. It must be used to access Ulysses' Temple due to buildings collapsing in the Divide. One warhead needed for the Warhead Hunter challenge and achievement/trophy is located here. Also, the skeleton of Sunflower Summers', along with her Diary can be found along the east wall, along with Seymour (Only if Wild Wasteland trait is active). An Auto-Doc can also be found near the exit.

Notable loot

 * Seymour - Found near the remains of Summers, this is a small statue of a dog, only availabe if one has the Wild Wasteland trait.
 * Sunflower Summers' Diary - In a suitcase near Summers' remains.
 * Destroyed eyebot - southeast of the entrance to the cave, near a warhead. Once the warhead is detonated, proceed up the concrete beam marked by a blue old-world flag. The eyebot sits to the left of a large tube leading down. - This Eyebot (Fallout: New Vegas) location is somewhat misleading since it's  NOT actually in the cave itself  but rather before you enter the cave.

Behind the Scenes
"Abaddon" (אֲבַדּוֹ) is a 'Hebrew' word for 'Destroyer' or 'place of destruction'. In St. John's Revelation 9:1-11, Abaddon is described as the king of the bottomless pit and of a plague of locusts that resemble war horses with crowned human faces and having women's hair, lions' teeth, locusts' wings, and the tail of a scorpion.

Appearances
The Cave of the Abaddon appears only in the Fallout: New Vegas add-on Lonesome Road.