nearly three o'clock
And the young navigators had pictured to themselves that , if this should prove to be the location , the shelf would be so elevated as not to be visible from the front or below and that it would be concealed from above by an extended and overhanging cliff . `` Look for it as you would look for a bird 's nest in the cliff , '' suggested Ned . And that was the plan of search . It was nearly three o'clock when the boys had bade farewell to the Arrow and about half past five when the Cibola sailed over the second ridge of the Tunit Chas . But the course was far to the north and there was naturally no sign of the waterfall plateau or Camp Eagle . For a time they thought of passing over the camp and dropping a message , but this pleasant idea was given up . `` Although , '' as Alan expressed it , `` one of Elmer 's hot suppers and a soft bed of balsam boughs to-night would n't be bad . ''