It was at this site that Chief Victor of the Bitterroot Salish eventually marked an "X" on the treaty documents prepared by Stevens and his contingent. The Bitterroot Salish and their leader believed that they would not be required to leave the Bitterroot Valley as a result of the treaty signed at the 1855 Council. It would be 15 years before agents from the US government came to enforce provisions of the treaty requiring the Bitterroot Salish to relocate to the Mission Valley.

The area is now a quiet, serene state park. It is large enough at 187 acres for a nice walk or to find a quiet place next to the river for a picnic. The park is limited to day-use only activities with a handful of on-site amenities including vault toilets, picnic tables, drinking water, hiking trails, and ADA accessible facilities.

This park contains large, old-growth ponderosa pines, grassy meadows by the park picnic area, and large cottonwoods along the Clark Fork. There's also an aspen grove fed by a vernal pool (a shallow depression in clay-like soil that fills with water seasonally) and make great breeding habitat for frogs and salamanders.

The Hellgate Treaty between the United States government and the Salish, Kootenai and Pend d’Oreille Native Americans which created the Flathead Reservation was signed here on July 16, 1855. A monument in the park marks the location where the treaty was signed. 

Council Grove allows you to experience a feeling of solitude amongst the large, old-growth ponderosa pines, grassy fields, and cottonwood trees along the Clark Fork River. Many people come to the park for biking and hiking and even as a great place to fish, swim, and hunt in the right season.