Still, if you have time for only one longer hike in the park, I would recommend the Lost Palm Hike over this one. It seems the latter is less traveled, and probably that's why it is way easier to encounter animals there.
Some of the lizards that we met during our hike:
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Chuckwallas are huge!
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A quail:
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Blooming cacti:
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Barrel cacti:
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49 Palm Oasis:
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A short, uncut, unedited movie shot during the hike (we are breathing heavily as we just walked up a bigger hill):