Of course there must be some Orographic system; but to mark it, we should have had to fly over the land.
"The Head Hunters of Northern Luzon From Ifugao to Kalinga A Ride Through the Mountains of Northern Luzon With an Appendix on the Independence of the Philippines"
Cornelis De Witt Willcox
Troublesome as these limestones are, as roads, they are ever interesting, because the masses by the roadside present the most astonishing and beautiful forms of waterwear; upon a mass eight or ten feet across, there will be worn a system of ridges and intervening channels, which, in miniature, seems to reproduce the Orographic features of the whole country.
"In Indian Mexico (1908)"
Frederick Starr
This Orographic system, four hundred kilometres across, which remained for so many years an impassable barrier, has been surmounted by Russian tenacity.
"The Adventures of a Special Correspondent"
Jules Verne