Big Springs and Johnny Sack's Cabin

Big Springs is the headwaters of the Henry's Fork of the Snake River. Producing 120 million gallons of water per day, the spring forms wide and crystal-clear pools filled with trout (no fishing allowed). A paved trail leads to historic Johnny Sack's cabin, which is open for tours during the summer.

Park in the paved lot to the north of the wooden bridge. Walk back across the bridge while looking for large trout swimming in the shadows. Seagulls abound, on the lookout for snacks from tourists. 

Take a detour and walk down either side of the river for great views. 

From the bridge, continue south and follow the signs for Johnny Sack's Cabin (open in the summer from 10:00 to 4:00). Keep an eye out for waterfowl and minx.

Camping is available nearby at the Forest Service's Big Springs Campground.