21.   Mushroom clouds of smoke rose from the desert floor.

22.   Over millenniums, wind and water carved the hard and soft rock into the striated orange and red natural wonders that seem to pop out of the desert floor.

23.   Outside, on the flat, open desert floor, the dust devils dance and scatter their sand.

24.   Pull to the side of the road late in the evening, wander out onto the desert floor, and listen.

25.   Shadows ebbed across the desert floor.

26.   Spreading out from the tower, squat, concrete bunkers dotted the desert floor for miles.

27.   That container was placed on the desert floor surrounded by rolls of barbed wire and a watchtower.

28.   The balloon drops and begins skimming along the desert floor.

29.   The clean water left their station and snaked through seven miles of hose on the desert floor to quench the thirst of their comrades in arms.

30.   The cones seemed to rise out of the desert floor straight ahead, popping up for split seconds and disappearing.