There were queer footprints or claw-prints in the mud of brook-margins and barren patches, and curious circles of stones, with the grass around them worn away, which did not seem to have been placed or entirely shaped by Nature. There were, too, certain caves of problematical depth in the sides of the hills; with mouths closed by boulders in a manner scarcely accidental, and with more than an average quota of the queer prints leading both toward and away from them—if indeed the direction of these prints could be justly estimated. And worst of all, there were the things which adventurous people had seen very rarely in the twilight of the remotest valleys and the dense perpendicular woods above the limits of normal hill-climbing.