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Be the puff in our marshmallow, the volume in our cheers,
the reason we make Incredible Camp O Campers.

Support Camp Ondessonk with a gift to our Annual Appeal!

Donate Online Here


Outdoor Education

processingCamp Ondessonk’s mission of providing exceptional outdoor adventures doesn’t end when our last summer campers head for home. Since 1988, we have been providing interdisciplinary Outdoor and Environmental Education programs for Catholic and non-Catholic schools from Illinois, Missouri, Indiana, and Kentucky. In keeping to our mission year-round, Camp Ondessonk serves over 1,500 students a year in our unique and rustic setting; ideal for experiential learning – that is, learning by doing. 

Fill out the reservation form to begin the process of bringing your students to Ondessonk for an unforgettable learning experience.


It is advised that schools contact Camp first to inquire about availability and make reservations several months in advance – especially larger groups and for dates during the busier months of April, May, September, and October.  Call (618) 695-2489 x129 or email greg.santen@ondessonk.com.

Camp Ondessonk ADULT Waiver 2020 (Age 18+)

Camp Ondessonk MINOR Waiver 2020 (Under Age 18)

All visitors, program participants, students, teachers, adult chaperones, regardless of age, are required to sign a waiver. Children not attending with their parent must have one signed prior to arrival.



The Program Planning Packet will answer many questions about program curriculum, lodging, meals, etc. that teachers and parents may have about Camp. 

If you need help filling out the form see the Example Completed School Form.



Would you like Ondessonk Instructors to visit your school? We can bring Camp to you for a half or full day of teambuilding or environmental education.  Download and return the following form to have us come to you!


If you need help filling out the form see the Example Completed Off-Site Form 2019


Ondessonk Maps


Ondessonk Rules and Regulations


To see photos of our unique and rustic cabin units, tent areas, and other great spots to sleep at Camp during the year, click here.


What We Do

Pakentuck Waterfall Camp Ondessonk ExperienceCamp Ondessonk works closely with educators and group leaders to create a dynamic experiential curriculum providing students with hands-on learning. An Ondessonk Outdoor Education experience promotes group building, communication skills, and leadership development as well as creates a sense of stewardship towards the natural world. Our programs focus on the principles of interdependence, in particular one’s relationship to the natural world as well as a relationship with the people around them. A school program at Ondessonk also promotes a student’s personal growth in the areas of self-esteem, trust and teamwork.



Our program offerings include:


Outdoor Education                                           Equestrian Education

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                                                                                                                                                                                          Adventure and Leadership                                                 Evening Activities















What is Outdoor Education?

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  • A process that uses a wide variety of teaching styles and resources to take learning into the out-of-doors. Our teaching methods and techniques are based on a philosophy of experience-based learning through direct contact with the natural world.
  • Multidisciplinary in nature. Our programming options provide curriculum enrichment to many subject areas on the elementary and secondary levels.
  • Active exploration, drawing on the senses of touch, taste, smell, sight, and hearing.
  • A strong focus on group interaction, cooperative learning, and critical thinking/problem solving skills.
  • The development of skills, attitudes, and concepts focusing on the interdependence between human beings and the natural environment.

For more information and questions about reservations, please contact:

Greg Santen

Program Services Director
Email: greg.santen@ondessonk.com
Phone: 618.695.2489 x129

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