Geeky Bob

I tend to pay attention to this warning sign more than any of the other warning signs when I'm riding around Saguaro National Park...

PS - True story: the sign depicted above is posted right before a very steep descent into a 90-degree right turn, which is immediately followed by an almost 180-degree turn to the left into a steep climb. I have ridden that section of the park almost 200 times, and yet I still navigate it very slowly, because I am reminded of the cyclist I once met who lost control of his bicycle in that section of the park; he woke up in a hospital with a femur which was broken in four places and no memory of the preceding two weeks before the accident.