Holdbrooks skims over the words, as if he is quoting from his forthcoming memoir, Traitor?

Iceland is geology in action. A one-hour flight from Reykjavik skims over steaming geothermal areas, the great crustal rift and some of the country's most famous volcanoes.

Just as a reader skims quickly over the individual words on page, so we scarcely see a tree exactly and completely with regard to its leaves, branches, color, shape.