The Carson Trail at the Rachel Carson Wildlife Refuge in Wells, Maine is an easy 1 mile loop hike that leads through a pine forest on the edge of a salt-marsh.
There are about 6 lookout points along the trail that give great views of the salt-marsh. The trail is fairly flat with minimal elevation gain and ascent.
This is a popular trail, especially for dog walkers and strollers. Biking is technically allowed, but may be a bit difficult due to the high foot traffic.
Parking a be a bit tight if you show up later in the morning since the parking lot is not very large. To enjoy this trail during the Summer, show up early.