The passageways are unquestionably due in a measure to water-erosion, but Mr. Wheeler, who has given the matter much study, is convinced that a more potent agency has been at work.
"Among the Canadian Alps"
Lawrence J. Burpee
The erosion of ages has here carved out of the face of the cliff a lofty, semi-circular alcove, and over this background of sombre rock drops a ribbon of sparkling diamonds.
"Among the Canadian Alps"
Lawrence J. Burpee
It is therefore a much better ditch than the kind of ditch very often dug by erosion along the country roadside.
"The Future of Road-making in America"
Archer Butler Hulbert