I followed crows streaming from 3 different directions and finally honed in on this crow roost in downtown Lynn. Difficult to count them but maybe two thousand plus crows enjoy this roost. It is surrounded by city but there is no access as it is enclosed by a 20ft chain link fence and sandwiched between warehouses and railroad tracks. Not all of the roost is visible. I finally got to see a portion from a small parking lot on State Street beside the Salem Five bank drive through. You can also see part of the roost from behind the Eastern Bank Corporate Headquarters off Market Street just off the Lynnway. I have often seen crows streaming from the harbor and from Swampscott but they were just sucked into the city and I could not locate the roost until now.   Fun! - Linda Pivacek, Nahant