A warning to visitors from Wikipedia (as of 2008):
About 600 deaths have occurred in the Grand Canyon since the 1870s. Some of these deaths occurred as the result of overly zealous photographic endeavors, some were the result of airplane collisions within the canyon, and some visitors drowned in the Colorado River. Many hikers overestimate their fitness level, become dehydrated and confused, and must be rescued. The Park Service now posts a picture of an attractive and fit young man at several trailheads with the caption "Every year we rescue hundreds of people from the Canyon. Most of them look like him", in an attempt to discourage hikers from feats which are beyond their abilities.
But don't let the above stop you from visiting this great natural wonder! SEE YOU THERE - you know how I look!
It's important that as you're enjoying the beautiful scenery the Grand Canyon has to offer, that you are watching your little children closely. There are parts that could be potentially dangerous for a curious tot or an inquisitive grade schooler. Watch them closely near the Canyon.
This photo illustrates that it is REALLY a long way down.
Adults that fall over the edge (they step back to get a better photo or something like that) have only themselves to blame. They should know better, after all. But you need to watch children.
The railings around the edges of the lookout points are only meant as a warning that you are close to the edge, and are not meant to absolutely keep people, and especially children away from the rim.
So if you have young children with you, keep them within arms reach.
There are only thin metal fences that separate you from the edge of the rim. There are signs posted to warn you about this. Don't fall off!
And I don't believe this: Look closely in the picture and see in the snow on the rock there are actually footprints!! People are actually climbing over the fence and standing on that rock to pose for photographs. Don't do that!