Yes but not in magnitude. Saw one swimming in current just off waterfall.
Not to my knowledge or experience
I've never seen any snakes or much other wildlife. I've been hiking all up and through there on several occasions.
I feel like there's always a chance for snakes, but while I was there, I didn't see any. I hardly saw any wildlife with the exception of some birds. I think this place would be fine if you're hoping to avoid snakes.
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