Our family has been to a number of Idaho State Parks, but few have captivated us as much as Massacre Rocks State Park in southeast Idaho. This site is one of Idaho’s “hidden gems” with its beautiful views of the Snake River, interesting hiking trails, and rich, historical significance.
The area history is not just limited to Oregon Trail history and early mining history, but a geological history stemming back to the time of the Bonneville flood. The natural history is also a fascinating aspect of the park, with its incredible variety of high desert plant life and wide range of bird species.
When the great Bonneville flood raced through this area some 14,500 years ago, it ripped huge boulders from the mountainsides and tossed them around for hundreds of miles. These boulders were smoothed and polished by the incredible force of the flood, and tossed up on the embankments. A short .4 mile interpretative walking tour took us through one of these boulder fields; the sheer size of these stones is breathtaking. The walk pointed out channels carved by ancient waterfalls and various volcanic formations. Another short walk near the primary parking lot brought us to a viewpoint above the visitor’s center. Both these walks were very well signed with lots of information about geological features and the local plant life.
The flood left behind a breathtaking vista of the Snake River. In this area, the river curves gently through the canyon, the water is easy to access and the current is gentle. Hundreds of birds could be seen floating in the water or flying overhead. We were stunned to observe an entire flock of great blue herons in flight.
For centuries, this was a peaceful place utilized by both early settlers and natives. During the time of the Oregon trail, this area had been used as a watering place for Oregon trail travelers. These pioneers called the area “Gate of Death” and “Devil’s gate” because of the fear of ambush in the narrow canyon. Interestingly, the massacre which lent its name to the park, did not happen in “Devil’s gate” but east of the park itself.
The Massacre Rocks visitor center, which is located in the park, describes the route of the Oregon Trail. It also houses a small collection of Oregon Trail artifacts and interpretive material. The visitor’s center has maps of the park and of the various hiking trails throughout the site. At the far end of the park is Register Rock, a large boulder inscribed with the names of dozens of Oregon Trail pioneers who had passed through. The boulder is protected beneath a shelter and is surrounded by a small, but shady, day picnic area.
We were only able to spend four hours in Massacre Rocks State Park, and did not have the opportunity to hike the 12K trails that surround the park. One short walk would have taken us along the old Oregon trail, others would have brought us to other geological and natural history features. We managed to see quite a bit in half a day, but to experience all the trails and the campfire programs, you’ll want to spend the entire day and evening in the park.
Massacre Rocks State Park covers some 1000 acres and has a 50 unit campground with water, electrical and RV hookup. There’s plenty of restrooms and picnic tables, hot showers and a boat launch. Kayaks and canoes are available to rent for use on the river. There are also 4 cabins that overlook the Snake River that can be rented. Between Memorial Day and Labor Day, the park staff offers campfire programs.
Massacre Rocks State Park is located about 30 minutes to the west of Pocatello, Idaho, just off Interstate 86 at exit 28. The individual campsites rent for $20 a night, the cabins are available for $45 a night. Reservations can be made year round by calling (866) 634-3246.