Collapsed Car Tunnel

 is part of the underground tunnel system under the Capital Wasteland. It's directly below Dupont Circle, which it has two exits to, as well as Dupont Circle Station in the Metro system.

Bugs

 * Using VATS while on a large pile of rubble with a melee weapon can cause the player to glitch into the ground and getting stuck. Loading or killing yourself is the only way to get out.