Three Island Crossing State Park is located on the Snake River at Glenns Ferry. It is home to The Oregon Trail History and Education Center where visitors can learn about pioneer emigrants and Native American history. Oregon Trail pioneers knew this spot well. It was one of the most famous river crossings on the historic trail. Pioneer travelers used the three-island crossing until 1869, when Gus Glenn constructed a ferry about two miles upstream.


Southwestern Idaho, SE of Mountain Home, 4 mi. off I-84


I-84 at Glenns Ferry, Exit 121, turn left on 1st Ave; left on Commercial Ave; then right on Madison Ave. Travel approximately 1 mile on Madison Ave to the park entrance. See location map below.

Nearest City

Glenns Ferry

Street Address

1083 S Three Island Park Dr
Glenns Ferry ID, 83623

Mailing Address

PO Box 609
Glenns Ferry ID, 83623


All Year


$5 per vehicle / day; Separate camping fees


Campsites, Dump Station, Gift Shop, Handicap Access, Motor Coach Parking, Parking, Restrooms, Visitor Center

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