Che cosa significa If you've ever been to the North Rim, you know that there is a trail along the edge if the canyon, and the only thing separating the trail from a shear cliff drop-off is a little rock wall. ?

I don't get structure of the sentence starting with "if canyon. "
what's the verb for the sentence " If canyon?
Would you kindly paraphrase it? Is it just a typo for "of " instead of " if" here? ( the edge "of " the canyon.

>She screamed, "My father tried to kill me!" Then the memories associated with the experience began to flood into her conscious awareness. It turned out that her father didn't really try to kill her, but he did frighten her. She was 4-years old and visiting the North Rim of the Grand Canyon.【 If you've ever been to the North Rim, you know that there is a trail along the edge if the canyon, and the only thing separating the trail from a shear cliff drop-off is a little rock wall.】 Apparently, the little girl was running down the trail and her father became worried about her safety. To "protect" her and teach her a lesson, he held her tightly with his hands around her waist and lifted her over the scary drop off saying, "See how far down you could fall?" She repressed the
scary memory from her conscious mind. But her unconscious mind never forgot what it is like to be held and suspended in that way. From that day forward she refused to be hugged or held tightly.