The entrance of the flooded metro is located on the side of an old expressway which is littered with decrepit pre-war vahicles. The entrance to this station is located in the middle of a square at the bottom of a set of nonfunctional escalators. On the other side of the expressway lies a large raider camp, whose occupants can easily overpower a lower leveled Wanderer.
The station exits into Mason District at Andrew Avenue with some radroaches skittering around radioactive barrels and little else of note. The street leads north, further into the city swarming with super mutants.
The metro itself is mainly caved in, and is a maze of utility tunnels and shafts that mirelurks of all types have taken to inhabiting. It also has a very high complex of stairs leading downwards, breaking into small rooms near the beginning. Be warned that there is a shaft in the middle of this complex; resist the temptation to jump the railing, it's a long fall.