Riverside Park is the site of the old Veazie dam which was removed in 2013. Cables used the stretch across the river over the dam and workers could ride in a a gondola while performing maintainance. Up on the bank you can still see where the cables were attached. Nice view of the river up there.
The cache in under cover but the hill might be tricky in snow and ice.
Congratulation Sudonim for FTF