Content starts here

CLOSE ×

AARP Membership — $15 for your first year when you sign up for Automatic Renewal

Get instant access to members-only products and hundreds of discounts, a free second membership, and a subscription to AARP the Magazine.

Join Now

Renew Now

Back to Things to Do

Massacre Rocks State Park

Name: Massacre Rocks State Park
Address: 3592 N. Park Ln., American Falls, ID, 83211, US

3592 N. Park Ln.

American Falls, ID 83211

Visit Website

By clicking the links above, you'll leave AARP and go to a website that is not operated by AARP. A different privacy policy and terms of service will apply.

208548-2672

Register Rock, located two miles from the park, is home to a huge boulder that holds the signatures of Oregon Trail emigrants who stopped for an evening of rest before continuing on their journeys.

Please use "Flag This Place" to alert us about content that is inappropriate or needs immediate attention. Nothing you submit will be shared with other site visitors.

AARP Events for Pease

Featured Event

Free Coffee Friday featuring Wish of a Lifetime

Friday, Feb 6, 2026 at 9:30 a.m. CT

AARP Minnesota Information Center at Mall of America

Bloomington, MN
Featured Event

Free One-on-One Technology Support Sessions

Thursday, Feb 12, 2026 at 10:00 a.m. CT

AARP Information Center at MOA

Bloomington, MN
Featured Event

Happy Valentine's Day from AARP Minnesota

Friday, Feb 13, 2026 at 9:30 a.m. CT

AARP Minnesota Information Center

Bloomington, MN