seven o'clock
Ned thought of the four nights of hard floor and agreed , but he said : `` You 'll have to forget soft beds if we 're ever going to find Cibola . We 'll come down to-night , though , and make a camp of our own with a fire and a pot of coffee , and at daybreak we 'll be off . '' The boys had taken a light luncheon just after starting on the return trip , and now , soaring over the Tunit Chas again , they began to be anxious for night and supper . At seven o'clock the peaks and ridges below them had begun to drop into foothills and as the great sandy deserts of distant Utah and nearer by Arizona came before their eyes the boys decided that it was time to anchor for the night . They were sailing over the eastern slope of the last low ranges of hills , barren of trees or vegetation . The aeroplanes being given the proper depression , the Cibola shot earthward and then , the propeller coming to a pause , floated gently along above the jumble of rocks . Making fast the anchor in a ragged pile of these the boys soon drew the Cibola to the ground and lashed her fore and aft to heavy boulders .