Bay Circuit Links: North.

This is a helpful way to identify and explore the many open space parcels that make such an important contribution to the Bay Circuit Trail System.

It is divided into three sections for the North, West and South and moves in the direction of the trail description pages from Plum Island to Bay Farm.

1. North: Merrimack Watershed and Great Marsh Coast. Moderately constricted but a significant agricultural presence along 1A.

It is part of the granitic underlay that comprises much of the trail system.

Spoke Trails: Border to Boston, Mystic.