Big Heart Falls via Necklace Valley Trail and West Fork Foss Trail
22.4 mi
Distance
10 hrs 27 min
Time
terrain
4,219 ft
Elev Gain
Overview
This is a moderate one way trail in Mount Baker-Snoqualmie National Forest.
This trail goes by Trout Lake, Lower Copper Falls, Middle Copper Falls, Upper Copper Falls, Malachite Falls, Copper Lake Falls, Big Heart Falls, Atrium Peak, Little Chetwoot Lake, Iron Cap Lake, Iron Cap Gap, Opal Lake, Emerald Lake, and Jade Lake.
Sights to See
Rate this Hike
★★★★★
Public Tracks
Foss trail loop (lots of "off-trail")
Formal trail ends at Big Heart Lake; we would probably just stop there and base-camp. Full loop includes some class 3.
https://engineeredforadventure.com/foss-lakes-necklace-valley-loop/
https://www.alltrails.com/explore/trail/us/washington/alpine-lakes-high-route
alpine lakes high route
can go up to la bohn lakes. iron cap mountain and mt hinman are both scrambles with mild class 3
saved by an egg McMuffin
Kaytlin gerbin Aug 20something 2025 - 8 hrs
