Yao guai tunnels

The yao guai tunnels are located due west of the charnel house, and northwest of Smith Casey's garage. The entrance is a chain-link fence door in a rocky outcrop. As the name suggests, this cave system is inhabited by a large number of yao guai.

Background
Wastelanders settled in this cave system for at least one month. The caves provided shelter for them against raiders, but did not help much against the yao guai that had already made their den there.

Bobblehead location
To find the Bobblehead - Sneak, one will enter facing east, and will continue traveling eastward until a yao guai is seen running across the path ahead from the left to the right (this is a scripted event, and the yao guai will not be targetable in V.A.T.S.). If the animal friend perk has been taken, this event is different: the yao guai will stand on its hind -legs instead of rushing right to left. At this intersection, marked by a lantern to the left, and with an overturned bathtub on the right, turn left (north). Continue on this path to a Nuka-Cola Quantum on a table, and turn right (east) there. Continue on this path until reaching a cavern with two exits leading south. Follow either path generally southward, past a stop sign and a downed chain link fence, to the entrance into the yao guai den. Once inside the den, walk straight ahead to the central pillar (not the one in the small room with all of the skeletons; keep going into the large open area), and then head to the left. Immediately look for the natural stone ramp that leads along the eastern edge of the cavern, overlooking a crescent-shaped pool of water. At the base of the ramp (directly behind pillar with dead wastelander in the hole up high) is a metal box with the bobblehead standing on top of it.

Notable loot

 * There is a Pre-War book on a picnic table just as one enters the tunnels.
 * There is a bottle of Nuka-Cola Quantum on a table near a radio, on the way to get the Bobblehead - Sneak (see below).
 * There is also a large stash of ammunition, including frag mines, found at the point where the yao guai runs from left to right in front of you; simply turn right (where the yao guai goes) and it is all on a large shelving unit.
 * Floating in the pool of water next to the bobblehead is a settler's corpse containing the Yao Guai den note about setting up camp in the tunnels.
 * In the southern section of the yao guai tunnels, there is a Grognak the Barbarian book along with a dead raider on ledge directly in front of the one-way exit out of the yao guai den. One cannot reach this from the tunnel floor, and instead, one must travel through the den and exit by the ledge.

Appearances
The yao guai tunnels appear only in Fallout 3.

Bugs

 * Targeting the first yao guai that runs across the screen at the start of the cave (it has no AI and disappears after it is first seen) in V.A.T.S. can cause the game to freeze.
 * The Enclave camp may not be around until you go into the caves and back out again.
 * While climbing up the natural stone ramp by the Bobblehead, the game might act like you are walking/swimming in water.