(1) The helicopter then descended into the bottom of the canyon and landed on one side of the Colorado River.(2) She could barely see the outline of a river winding lazily through the canyon .(3) The canyon opened into vast boulder fields, where the river sometimes disappeared in the distance.(4) Camping and fishing are available down in the Pecos River canyon or you can hike up on the mesa.(5) It's a hard battle though because when you're at the bottom of a vast canyon looking up, it seems a hell of a climb to the top.(6) Crops were withering, cattle were dying, and the river that once sculpted canyons was a trickle.(7) The photography group go south again for the day, sheltered from the westerly wind to dive a maze of deep, narrow canyons .(8) The book was an argument for preventing further dams in the Colorado River canyons .(9) Outlanders often refuse to believe that Texas even has canyons or mountains, but this range is no mirage.(10) Before long, more prospectors arrived and followed the gold trail up the canyons to the west of the river.(11) There is no place as mysterious or haunting as the canyons and valleys of the American Southwest.(12) Three fascinating cultures converge in the red rock canyons of Mesa Verde.(13) We've all seen earlier images of the Mars surface, which showed valleys and canyons .(14) The trip passes by waterfalls, forests, canyons , valleys, sinkholes and caves.(15) Oak woodland develops best in moist, protected canyons and valleys with deep alluvial soils.(16) The coastline is varied, dramatic and rugged, cut with caves, gullies, canyons and sheer cliffs.