Photos from mock groundbreaking Post published:October 20, 2011 Post category:Green Line Thanks to all who came to the mock groundbreaking tonight protesting the delays of the Green Line Extension. Somerville is shovel ready! Click for more photos. You Might Also Like “Somerville by Design” planning initiative envisions Green Line Extension October 10, 2012 Video segment on Ball and Magoun Squares October 4, 2009 Notes from Green Line Advisory Group meeting December 2, 2008