Celilo: Progress Versus Protest

April 07 - July 14

The building of The Dalles Dam on the Columbia River in 1957 and the resulting submersion of Celilo Falls was done under the flag of progress. Biologists, sport and commercial fishermen, congressmen, and citizens opposed and protested the dam. Almost 60 years later, American Indians are protesting yet another “progressive” project, the Dakota Access Pipeline. Is history repeating itself?


Pendleton Beach Towel Sale

April 01 - April 30

The Museum Store has Pendleton beach towels, regularly $49.50, on sale for the entire month of April. You can purchase two for only $75 and save $24! Come in early while the selection is best. You’ll be all ready to hit the beach or your favorite swimming hole as soon as the warmer temperatures arrive.


5th Annual Mammoth Cup Golf Tournament

May 21

Wildhorse Resort & Casino presents the 5th Annual Mammoth Cup Golf Tournament
Get your favorite foursome together and enter our biggest fundraising event of the year!

Sign Up Online

Wildhorse Resort Golf Course

Format: Four-person Scramble, two drives per person/18 holes

Side Action: $20 enters you in Longest Drive, Longest Putt, Wrong Hand Putting Contest, Closest to Pin, $10,000 Hole in One

Raffle: Tickets $1 or 6 for $5, winners drawn following the tournament

Tee time: 1pm shotgun start

Registration: 11am

Fees: $380/team ($95 per person) includes green fees, complimentary range balls, cart, tee prize, box lunch, and Indian Taco awards banquet. There will be plenty of exciting prizes to be won, beverage carts throughout the day, a raffle for great golf items and rounds, and lots of fun side bets. Member discounts apply! Extra tickets to the awards banquet are $10 each.

New this year! Take the DIXON CHALLENGE and win prizes like golf balls, Golf Digest, Aurelius Drivers, gift certificates, hybrid clubs, and more!

Deadline for entries: May 17, 2017

To purchase additional tickets to the Awards Banquet, click here!

All proceeds go to the Tamástslikt Trust Fund to provide for long-term sustainability of the museum.

Supported by: CHI St. Anthony Hospital and Pepsi/Pendleton Bottling Co.

Mammoth Cup 2017 Awards Banquet



Watch and listen for Spilyáy, the magical Coyote of Legend-Time. Find Spilyáy in Tamástslikt’s major galleries: We Were, We Are and We Will Be. Tamástslikt is a storyline museum and therefore does not merely document artifacts. In the SEASONAL ROUND, the Natítayt (the people) follow the pre-contact lifestyle of subsistence in the abundant natural world, reflecting its balance and order. Ambient sounds take the visitor to another time. Visitors will hear horses rumbling across the grassy plateau, storytellers in the winter lodge, the bell and worshipers in the church. They will hear a recreation of the 1855 Treaty Council of Walla Walla in the tribal language. Audio, artistry and historic images, rare and beautiful artifacts create a broad sensory experience depicting our Tribal world.


Our Tribes are alive and prospering today. Tribal people have survived and thrive in the contemporary world. WE ARE features our resilient people as soldiers and warriors, players in government and the regional economy, leaders in salmon recovery success, balancing the modern with traditions, and still abiding by the Law of the Salmon.


Achievements, aspirations, and concerns of the tribal community are voiced in WE WILL BE. Cháwna mun na’ámta–We will never fade.


The 10-minute introductory Coyote Theater is open for visitors to enjoy. Spilyáy, the magical coyote dominates the story, expressing wisdom and foolishness in a comic exposition of how the world came to be as it is today. Witness Spilyay as he vanquishes the forces of destruction and saves the traditional foods for the Natítyayt.  Coyote Theater is accessible with admission.