The full Green Line Extension is open! Post published:December 12, 2022 Post category:Green Line Hundreds rode the first trains, music was played, mayors (current and former) danced, speeches were given, and Somerville became an even better place to live on this fine December day! Keep reading for more photos from Karen Molloy. You Might Also Like Public art coming to the Green Line Extension March 15, 2021 Spotlight on the Green Line as a sustainable project April 11, 2014 Capuano disappoints Somerville by going pessimistic on Green Line Extension December 9, 2011