A few months ago we showed you “13 Unreal Photos” of what boring a New York City subway tunnel looks like.

Well, it’s officially time for a photo update on the MTA’s work that is going on deep below the skyscrapers of the bustling city.

These latest photos of the East Side Access “megaproject” that will connect the Long Island Rail Road to a new concourse under Grand Central Terminal were taken this month.

Check out the MTA’s Flickr stream for more photos of the process.

The MTA also reached its “final mile marker” for the “legendary project” that is the Second Avenue Subway this month, according to President of MTA Capital Construction Michael Horodniceanu. The milestone was awarding a $208 million contract, the last of phase 1 for the $4.45 billion project expected to be complete December 2016.