Fee: $5/vehicle motor vehicle entry fee; camping $15-$50/night
About this park
Massacre Rocks State Park near American Falls sits along the Snake River, where huge volcanic boulders line a narrow passage once traveled by Oregon Trail emigrants. The rugged rocks and river views make the site both scenic and historically important. Visitors can still see wagon ruts and scars left by wheels on the rocks, and a visitor center helps explain the emigrant experience. The park also has hiking trails, boating access, birdwatching and a campground. A $5 per-vehicle entry fee applies, and camping runs $15 to $50 per night. It is a rewarding stop for history lovers traveling through southeastern Idaho.
Massacre Rocks State Park FAQ
Where is Massacre Rocks State Park located?
Massacre Rocks State Park is in American Falls, Idaho, at 3592 Park Ln. GPS coordinates: 42.7189, -112.7689. Get directions.
Is there an entrance fee at Massacre Rocks State Park?
$5/vehicle motor vehicle entry fee; camping $15-$50/night. Fees can change by season, so confirm with the park before you go.
How do I contact Massacre Rocks State Park?
You can call (208) 548-2672 or email info@idpr.idaho.gov. The park office can confirm RV site availability, hookups, length limits and current conditions.
Are there RV campgrounds near Massacre Rocks State Park?
Yes. The closest RV-friendly campgrounds listed on ParkedRV are:
- Mink Creek Group Site Campground (17.9 mi, reservable)
- Scout Mountain Campground (20.9 mi, reservable)
- Big Springs - Caribou (34.3 mi, reservable)
How current is this information about Massacre Rocks State Park?
This listing was last updated on September 20, 2026. If something is out of date, let us know and we'll fix it.