Is this the responsibility of the National Park Service?

Indeed -- whose responsibility is it?

I can't understand why so many reports of uncleared sidewalks concern city parks. Perhaps this one is the responsibility of the National Park Service, but there have been dozens of reports of parks which are simply small neighborhood spaces, unploughed within and also on the sidewalks alongside them. Can someone please explain why Cambridge is not ploughing around its own public spaces (and left piles of icy snow for days on the benches in front of City Hall near the bus stop)?

Thanks, Mary.

This sidewalk along the park has been treated by the City, Dept of Public snow & Ice removal has a process of addressing Main streets 1st, 2nd secondary street, bike lanes, Municipal building, Parks & sidewalks...etc