“Its northern opening was located in a small cleft in the hillside at the bottom of an arroyo within eyeshot of the Texas border.”

“Judging by the thickness of their tails, some of the lizards find the arroyo banks fertile ground.”

“All of the routes would adversely affect some wildlife, including peregrine falcons, arroyo toads and Pacific pocket mice.”

“This means the Powder River Basin's soils, arroyos and streams will receive an astounding one billion gallons of water per day.”

“Sauer, who spent a lifetime studying arroyos and erosion control, concurred with Sampson.”

“Sea-kayak around uninhabited islands and hike desert arroyos, then spend evenings swapping expedition tales with Messner and Kane.”