CTLC Staff and Facilitators
Meet our full-time staff!

Karel Hilversum
Lindseth Co-Director of Cornell Outdoor Education, The Dan Tillemans Director, Cornell Team & Leadership Center
Karel joined COE in 2016, coming directly from his native Puerto Rico. From there, he designed and delivered hundreds of challenge course programming, outdoor adventure education courses, and leadership & team development workshops for over 20 years to groups across the Americas and the world.

Elizabeth Anderson
Challenge Course Manager
Originally from Alexandria, VA, Elizabeth came to COE all the way from California. She completed her Bachelors of Science in Recreation, Parks, and Tourism at Radford University. She holds a current ACCT Level 2 Facilitator Certification and has worked in the outdoor education and experiential learning industry for nearly a decade. Elizabeth enjoys skydiving, rafting, backpacking, climbing up trees.

Sylvie Froncek
Leadership Program Coordinator
Sylvie started working with Cornell’s Team and Leadership Center at the age of 15. Since then she has worked as an outdoor adventure guide for the Claremont Colleges in California, a rock climbing instructor in Colorado, a bicycle tour guide in New Zealand and the Northeastern USA, a mountain instructor for the North Carolina Outward Bound School. Bicycling, canoeing, backpacking, rock climbing and organic farming are Sylvie’s primary outdoor activities.
She holds a Wilderness First Responder Certification and she’s a League of American Bicyclists Certified Instructor.
Lead Facilitators

Marcus Brooks
Cornell Team & Leadership Center Coordinator
Marcus comes to us from New York City where he earned both his Bachelors degree and MBA from Columbia University. He uniquely combines his formal business skill sets in leadership, organizational development, entrepreneurship, strategy and finance with his deep passion for human development through the great outdoors and experiential learning. He is an accomplished wilderness guide having lead international trips to destinations as far away as Kilimanjaro. Marcus holds an AMGA-CWI and EMT certification.