Three Island Crossing State Park

Three Island Crossing State Park is a 613-acre area along the Snake River near Glenns Ferry that preserves original wagon ruts from the Oregon Trail era. The park offers hiking trails, picnic areas, campsites with electrical hookups, eight rental cabins, and river access for fishing.

The crossing became critical around 1869 when Gus Glenn established a ferry service two miles upstream. This ferry connection led to the creation of Glenns Ferry and eliminated the need for settlers to ford directly across the wide river.

The education center features exhibits about pioneer travelers and their interactions with Native American communities during westward expansion. These displays help visitors understand why this river crossing held such importance for settlers moving west.

The site is accessible year-round and well-marked for visitors of all skill levels. It is recommended to bring comfortable shoes and water, especially during warm months, as parts of the park have direct sun exposure.

Each August the community organizes commemorative events with historical skills demonstrations at this National Historic Trail site. These celebrations show visitors the practical techniques that pioneers used when crossing the wide Snake River.

Location: Elmore County

Inception: 1968

Website: https://parksandrecreation.idaho.gov/parks/three-island-crossing

GPS coordinates: 42.94110,-115.31800

Latest update: December 11, 2025 11:04