Rock Guiding & Courses

Leslie Timms is the owner/head guide of On the Rocks, a rock climbing guiding and education service based out of the Beaver Valley in Ontario, Canada.

 On the Rocks offers climbing courses and adventures on the Niagara Escarpment and across North America.

Fully insured and certified PCGI Guides.
PCGI Certification Courses

Memorable rock climbing & rappelling adventures, technical rock climbing courses, outdoor coaching & technique, unique workshops, guide certification courses.

Low client to guide ratios.
Guaranteed good times!

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