Oasis

Oasis is a settlement located north-west of Clifftop Shacks in the Capital Wasteland. It is unusually full of trees and green plants. Birds can also be heard once inside the gate, suggesting that animal life has since been flourishing here.

Background
Oasis was originally a mine, but after the Great War it became just another part of the wastes. This was until Harold, a special mutational product of the Forced Evolutionary Virus, arrived. Harold possessed a tree growing on his head which he called Bob (and at times "Herbert" because, as he says, "Bob hates it") and eventually found himself overwhelmed by Bob and became rooted to the ground during his travels in the Capital Wasteland region after 2241. Here, he was discovered by several people who began to worship him as a god, and a small and exclusive cult known as the Treeminders began to form in secrecy. Bob began to blossom (which Harold apparently finds embarrassing) and many plants grew in this area, which became green with life, a stark and dramatic contrast to the rest of the wasteland.

When the player character arrives he/she is urged to talk to Harold. After a "cleansing ritual" held by the Treeminders, the player character meets with Harold. After learning his history, the player character is given the option of either burning him to death, increasing his fertility, or slowing it down. Strangely, if you chose to shoot Harold, he spontaneously combusts. This is the main plot/quest element for Oasis, and each choice has its own repercussions with the Treeminders, and can affect the player character's karma.

Layout
Oasis is situated almost at the top center of the map. It is surrounded by steep cliffs, and can only be entered through a small gorge by traveling west to east. The entrance is small and can be easily missed; use the compass for assistance.

It is possible to get the coordinates of the Oasis by killing the Drifter at Dickerson Tabernacle Chapel. There are also a pair (or more) of wandering wastelanders found in a random encounter who will disclose the location, before attempting to kill the player, as well as a hallucinating wasteland merchant who promptly dies after being talked to.

Sunken chambers
As you enter in sunken chambers, turn left and up in a small room you will find:
 * D.C. Journal of Internal Medicine nearby an orange glowing hole in the wall (inside a wooden box with the baseball glove).
 * 1 pre-War book; (on the trunk next to the table).
 * 1 Stealth Boy (on the table between chems).

At the bottom of the northern pond you will find:
 * 1 mini nuke standing on an underwater rock near the middle of the pool;
 * Various items of small importance (Mentats and combat knife).

On the way down to Harold's heart, you will find a skeleton near 2 ammunition boxes and 1 Chinese assault rifle. On top of the right crate you will find another Stealth Boy.

Continue right past the Stealth Boy, then left instead of the tunnel and you will find other various items of small importance (such as blood pack, RadAway, stimpak, and missile).

Damp cave
As you enter from the sunken chambers, you will find a missile, a paint gun, and a leaf blower on the ledge. On land, continuing around right side of cave you will find:
 * 1 Nuka-Cola Quantum.
 * A sniper rifle, on the far end in the middle near some rocks, light up your Pip-Boy to see it. Look for a skeleton and an ammunition box.
 * Various items of small importance (2 fission batteries found by some tires, 2 Nuka-Cola bottles and a conductor nearby on the left side by more cave fungus).
 * As you're exiting this cavern if you look right there will be (10mm pistol, 10mm ammunition, conductor and a stimpak).

Related quests

 * Oasis

Appearances
Oasis appears only in Fallout 3.

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