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From the most avid outdoors-man to dignitaries, fly fishing in Eastern Idaho is second to none. Occasional fly fishing tournaments and national exposure is not uncommon to Eastern Idaho's fly fishing rivers. Learn More

Big Springs

HC 65, P.O. Box 975
Island Park, Idaho 83429
Biking, Hiking, Snowmobiling


More than 300 miles of groomed trails set a course for snowmobilers of all abilities to tour spectacular mountain terrain. Warming huts provide winter enthusiasts with a cozy place to rest and plenty of parking is available for all to enjoy this scenic area.

It's a river's birthplace. One hundred and twenty million gallons of pure water a day -- enough to meet the water needs of a million people -- surge out of the ground here. A short distance from the glassy pool is a bridge. Toss bread crumbs into the water from it, and you'll see that constant flow (at a year-round temperature of 52 degrees) and the clean gravel bottom make for perfect trout habitat. Big Springs' trout get BIG. Leave your fishing pole in the car, though: No fishing is allowed until below the outlet to Henry's Lake, several miles away.

Take the short walking trail around the pond to reach Johnny Sack's cabin. Johnny was a German immigrant who built his cozy cabin and its furnishings by hand out of local trees. He also built a water wheel turned by spring water tumbling out of the hillside. The wheel provided electricity and brought water uphill to the cabin. Johnny's old place is now a visitor center and an attraction in its own right.

(Updated daily from December 1 - March 31)
Online Trail Report Available Here

To request a snowmobile trail map email [email protected] or [email protected].

For daily grooming updates follow us on:

Click here for a printable snowmobile map - PDF

For a map to the new Caldera Rim Snowshoe Trail:

Caribou/Targhee National Forest:  208-652-7442

Looking for a place to warm up on the trail? Big Falls Inn, at Upper Mesa Falls, will be open to snowmobilers and cross country skiers. Call directly for a list of dates the Inn will be open.


Map & Directions

Customizable Directions