Roads
Roads sometimes use a spiral to gain height in a confined space, cf. pigtail bridge.
Read more about this topic: Spiral (railway)
Famous quotes containing the word roads:
“Pioneers lay the roads for those who follow to walk on.”
—Chinese proverb.
“Two roads diverged in a yellow wood,
And sorry I could not travel both
And be one traveler, long I stood
And looked down one as far as I could”
—Robert Frost (1874–1963)
“Other roads do some violence to Nature, and bring the traveler to stare at her, but the river steals into the scenery it traverses without intrusion, silently creating and adorning it, and is as free to come and go as the zephyr.”
—Henry David Thoreau (1817–1862)