Mount Marshall via the Calamity Brook Trail is a 13.5 mile moderately trafficked out and back trail located near North Elba, NY that features beautiful wild flowers and is rated as difficult. The trail offers a number of activity options and is accessible from April until October. Dogs are also able to use this trail.
Climb this trail-less peak from Upper Works to claim another 46er and the southernmost peak of the MacIntyre Range. Mt. Marshall is the most southern peak of the beautiful MacIntyre Range but unfortunately it is a bit removed from the next peak, Iroquois Pek, so it does not have any maintained trials to its summit. The clearest herdpath to the top is to follow Herbert Brook from the Flowed Lands just between the Flowed Lands and Lake Colden. You'll have great views up towards Colden on your trip to the base of Herbert Brook but unfortunately the summit of Marshall is wooded with limited views.
Easy 4 miles or so to the Flowed Lands. Head around FL toward Colden Dam and just after the Herbert Brook bridge pick up the herdpath up Marshall on the left. Easy to follow, just look for the cairns. Beautiful trail, but very muddy. Typical ADK :)