Scrapyard

Scrapyard is a location south of Minefield. From Vault 101, it is northeast, past the Potomic River. More specifically, from Vault 101, in your map it is 3 squares north and 3 squares east almost exactly. It can be hard to find because it is somewhat of a depression in the ground. Looping along the south side of Scrapyard is an elevated railway, and south of that is geography sloping downwards into the river basin.

The Scrapyard can be entered through several breaches in the southwest, west, or north sides or through a gate on the south side.

In the northeast corner of scrapyard Dogmeat can be found fighting bandits. You will hear gunfire as you near this location.

Entrances near the southwest including the south gate will trigger a scripted event where a woman (wastelander) will approach you and tell you bandits have strapped explosives to her. You have the option to attempt to disarm the explosives or leave her. The skill test for this appears to be fairly high (50 or higher explosives?).

If you fail to disarm the explosive, she will start beeping and run away, then explode. After she explodes, the bandits will approach. One of these bandits has a Flamer. The rest have small arms and melee weapons.

This area has several radioactive pools that can be avoided, but appears to be empty of useful items.

Appearances
Scrapyard appears in Fallout 3