We are

Rim of the World Interpretive Association

Rim of the World Interpretive Association (ROWIA) is a California nonprofit, public-benefit corporation founded in 1982 to foster a better understanding of the natural history and resources of the San Bernardino Mountains. In partnership with the U.S. Forest Service, we maintain and staff Heaps Peak Arboretum.


ROWIA’s mission is to raise public awareness of and inspire active interest in the San Bernardino Mountains through nature-focused educational activities. Our vision emphasizes caring for the National Forest, including area treasures such as Heaps Peak Arboretum.


The many ways to support

Become a Member

Join the community!

Get benefits like discounts at the Arboretum’s spring and fall plant sales! Membership dues help fund Arboretum maintenance and other ongoing projects. 


Every purchase supports us.

Shop in person at the Arboretum’s Information Booth or here online! Buying an Adventure Pass at our booth helps support us too. 

Shopping on Amazon? Have them donate a portion of your purchase at no cost to you! Go to and select Rim of the World Interpretive Association (that’s us)! 


Dig in!

We’re always looking for volunteers. Whether it’s staffing our Information Booth, providing a helping hand at a plant sale, working in our gardens or assisting in some other way, let us know how you’d like to help! We’re a community of volunteers, and we’re ready to welcome you!


Help fund us!

Please consider donating to ROWIA. It all adds up. If you have a non-monetary donation you’d like to give, contact us!

With your help we keep Heaps Peak Arboretum and the surrounding forest vibrant!