Oh...and I have seen rattlers in the high sierra btw. Not high. But I have seen a HUGE one near Echo Valley...I'm not pulling out my map right now, but I would guess that's about 7,000? And I have a friend who saw one once at 10,000 in Yosemite.... just for info....
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http://ndeewoods.com/ and http://wilderstatepark.com/