Fall Celebration

75th Anniversary Celebration 

We began our 75th anniversary celebration at Old Faithful in Yellowstone National Park, the place where Warren Ost’s vision for ACMNP became a reality in 1951. Seventy-five years later, generations of ACMNP alumni and friends gathered to celebrate the story God has been writing ever since. From dinner gatherings at Old Faithful and Mammoth Hot Springs, a cowboy cookout, a country swing dancing evening, and worship at Mammoth Chapel to stories from alumni spanning the 1950’s through today, the weekend was filled with joy, gratitude and connection. We celebrated the people and the stories that have shaped ACMNP and dreamed together about the next 75 years.

And the story continues.

You can be part of what comes next by supporting team members in the parks, joining an IMPACT trip, attending a worship service, recruiting future team members, sharing ACMNP with your church, volunteering at a training conference, or making a financial gift. We hope you will also plan to join us in Yosemite next September 30 through October 2, 2027, for our next Fall Celebration. We know that God has big things in store for this next chapter in ACMNP’s history, and we can’t wait to plug you in in whatever way He may be calling you!

See more photos from the weekend by clicking here!