The boardwalk over marshy lowlands.
A paved section of trail leading to Big Four Mountain.
Marshy lowlands.
Taking a detour to explore the South Fork of the Stillaguamish River.
The new 224-foot aluminum bridge replaced the old wooden one after it collapsed from storm damage in 2006.
Nearing the edge of the forest, a sign warns of avalance danger. Downed trees from previous avalances are visible in the background.
Signs warning of rockfall, avalanches, and collapsing snowfields.
Looking up at Big Four Mountian.
The primary snowfield with muptile entrances visible.
Carefully walking up the snowfield.
The largest entrance to the caves under the primary snowfield. A collapsed section of an ice bridge is visible.
Getting a closer look at the ice.
Inside the cave looking back at the entrance.
Deeper into the cave.
Two entrances are visible.
The large waterfall at the far end of the cave.
Light bounces around the ice caves. A small waterfall drips from a hole in a crevasse.
Climbing one of the many lage boulders in the area. Hall Peak is in the background.
Looking northeast at Stillaguamish Peak (left, 5,720') and Mount Dickerman (right, 5,760').
A cairn in front of the secondary snowfield northwest of the primary snowfield.
Climbing another of the large boulders around the Big Four Ice Caves.
Bouldering near the Big Four Ice Caves.
Fireweed in front of the secondary snowfield.
The ice caves are a very popular destination.