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On January 17, 2009, I participated in a nature walk in Otay Valley Regional Park conducted by the San Diego Natural History Museum Canyoneers.
Information on the park is available at www.ovrp.org.
After the nature walk, I explored most of the existing trails on my mountain bike.
Transcript of survey.
Image annotations.
Data plotted on topo.
Trail Map.
Philip J. Erdelsky