Tourists get lost here,then Rangers,State and local police,Fish and Game, and locals go find them.To my knowledge no one has died from being lost,mostly they fall off the edge of bluffs or drown in the river.
A little girl was lost for several days and some local men on mules found her,they had snacks and candy for her.It would be scary for a kid,bears,and other wild animals are here that could eat you.
You should always tell someone the area you are hiking in,and when you expect to be back.
If you are on a marked trail you should have no problem.Get off the trail,and you are on your own.You can listen for sounds,like distant cars,roosters crowing,etc.Its best to go downhill and follow the creeks or rivers,you will eventually find your way out.If you think you have been missed,and people are looking for you,find whatever shelter you can and stay put.Whistles are good to carry,it's easier to blow one to signal than to yell.It wouldn't be much fun in the summer,lots of bugs and it gets cold in the winter.If you were without a way to build a fire and got wet you could get hypothermia.Always carry a lighter,small flashlight,and a whistle.
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I am the dust that dances in the light. - Rumi