Virginia Natural Land Bridge

The "Natural Bridge" arch is composed of solid grey limestone. It is 215 feet high (55 feet higher than Niagara), 40 feet thick, 100 feet wide, and spans 90 feet between the walls. The estimated weight of the limestone is 36,000 tons.

Other points of interest within the Natural Bridge Park are:

• Ancient Arbor Vitae, otherwise known as "Vires-Acquirit-Eundo", is a 1600 year old vitae and is the oldest and largest of its kind in the world. Its diameter measures 56 inches, and increase by one inch every thirty years. The crooked boughs are characteristic of the arbor vitae, also known as "the tree of life".
• Saltpetre Mine, mined in 1821 and 1864. During the American Revolutionary War and the War of 1812, earth from this cave was converted into saltpetre (potassium nitrate), which, in turn, was used to make gunpowder and other explosives.
• Lost River, whose source and outlet are unknown to this day.
• Lace Waterfalls, a pattern of water lace 50 feet high.