Seven avid hikers in safety helmets, wetsuits, and climbing harnesses smiled for a group photo before heading into the mouth of a narrow canyon in southern Utah's Zion National Park. Within hours of them entering Keyhole Canyon, dark skies unleashed fierce rains that sent water surging through the chasm, sweeping the seven to their deaths Monday. Their bodies were found throughout the week, the last coming yesterday. All were from California or Nevada. Also yesterday, authorities recovered a 33-year-old man killed by flash flooding near the Utah-Arizona border, raising the death toll to 20 from the violent rainstorm. (More hikers stories.)