Mama Dolce's

 marks Mama Dolce's Food Processing Plant on your Pip-Boy's map in Fallout 3. This place can be reached either through the Flooded Metro Station then east through Arlington Cemetery, or through the Falls Church/Arlington Metro Station in Falls Church.

Mama Dolce's Food Processing Plant is divided into three parts:
 * Mama Dolce's Processed Food
 * Mama Dolce's Food Distribution
 * Mama Dolce's Loading Yard

Story
Further investigation of the premises will uncover a Terminal with a 'corrupted' file. Retrieving Mama Dolce's Encryption Key from the body of the Chinese Remnant Captain will unscramble the message, revealing that Mama Dolce's was, in fact, a front for Chinese intelligence and espionage throughout the DC area, and would undoubtedly serve as the base of operations for the other outposts scattered in the surrounding Wasteland. It seems that their front, in the end, came back to bite them, as the security system warns of excessive radiation levels, suggesting that the spies, despite being highly trained, failed to maintain their nuclear-powered machinery and suffered the radiation poisoning that turned them into Ghouls.

Books

 * Tales of a Junktown Jerky Vendor is outside just northeast of the entrance behind some barrels.
 * Chinese Army: Spec. Ops. Training Manual is next to one of the snipers in the Loading Yard area.
 * Guns and Bullets is next to the other sniper on the opposite side of the Loading Yard.
 * Guns and Bullets is in a bathroom stall on the ground floor in the Processed Foods area.
 * Dean's Electronics is on a shelf in the middle of a stairway in the Processed Food area; it's next to a phone, a toolbox and a broken computer.
 * Tumblers Today is in the Food Distribution area. Drop down through a hole(s) in the floor to the lower “cave” area to find the book next to two safes and a skeleton.
 * Pre-War Book is on the upper level in the Food Distribution area. It's on a desk next to a terminal.
 * Another Pre-War Book is on the upper level in the Processed Foods area on a small table.

Misc

 * Nuka-Cola Quantum is on the upper level in the Food Distribution area. It's on a desk next to a terminal.
 * On the ground floor in the Food Distribution area is ramp that leads downwards to two safes, which require average and hard Lockpicking Skills respectively.
 * Good place to pick up Chinese Assault Rifles, Sugar Bombs, and Books, as well as the otherwise hard to find Dirty Chinese Jumpsuit.