Yes, I do see rattlesnakes from time to time. Over the years, I have seen hundreds of them. But this sign was not so much meant to warn of the danger of rattlesnakes, but to keep people on the paved trail. I think the drop-offs of the trail were much more of a hazard than the possible rattlesnake. This sign was on the Timpanogos Cave trail in the National Monument. I am happy that my government is concerned about my safety and welfare enough to post signs warning me about rattlesnakes.