Megaton is a settlement in the Capital Wasteland that is under protection of the TSC. It is located near Vault 101 and the ruins of Springvale. The town is built out of scrap metal; with most of the scrap comming from a pre-war airfield. The airfield was completely disassembled to build the town; which is the second largest settlement in the Capital Wasteland; the largest being Rivet City. The town was founded by wastelanders trying, unsucessfully, to get into Vault 101; and is named Megaton because of the 'Megaton Class Nuclear Bomb' which remains unexploded at the center of the crater that the settlement was built around.
- Nukapedia page for Megaton : http://fallout.wikia.com/wiki/Megaton