The Marble Arch of the Natural Bridge, North Adams, Massachusetts. 



"Our own country furnishes antiquities as ancient and durable, and as useful, 



as any; rocks at least as well covered with lichens, and a soil which, if it is virgin, 



is but virgin mould, the very dust of nature. What if we cannot read Rome, or Greece, 



Etruria, or Carthage, or Egypt, or Babylon, on these; are our cliffs bare?" — Thoreau. 



