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[[underlined]] Arroyo Seco [[/underlined]]

[[underlined]] Sept. 27 [[/underlined]], Left Pasadena at 9:30 AM. and followed up the Arroyo Seco to about 2200 feet, then over the ridge and down into Long Canyon at Switzers, then north over the ridge just west of Strawberry Peak and down to Colbys Ranch. 
Switzers in 3100, top of ridge 5500 and Colbys 3500.
After entering the canyon at 1400 feet we were in pure Upper Sonoran zone all day except for a trace of Transition on the ridge and north slope of Strawberry Peak. Here are lots of Pinus coulteri with the Pseudotsuga macrocarpa and in the gulch N.E. of Strawberry are some Libocedrus and Mr. Colby thinks some yellow pine.
It got dark as we came down the north slope so I could not tell the trees & was pitch dark when we reached Colbys ranch in the Coldwater canyon at 3500 feet. The last mile of steep trail down the slope I followed with my feet more than my eyes.