"Think of that," George said. "It's a whole mile down to the river."
Timmy leaned forward to take a deep look over the precipice at Yaki point.
"Boy!" he said. "This is pretty good. Almost makes me dizzy."
Below, the Colorado River was bright quicksilver, threading its way circuitously through the canyon. The striated walls rose majestically from the floor to towering temples.
The boy turned from the rock to look at the tufts of clouds floating by in the deep blue sky.
"I'm thirsty," he said.
Mrs. Briggs, still fascinated by the view, said, "Well, go get a drink, then."
Timmy walked over the edge, screamed as he fell.
Mrs. Briggs could only stare, stunned.
George uttered a cry and ran to the cliffs rim.