The Natural Bridge in Virginia is a 215 foot high, 90 foot wide remnant of a cave system that was created nearly 200 million years ago by what is known as Cedar Creek today.
The original limestone and dolomite, which the bridge is composed of, was deposited around 500 million years ago during the Cambrian and Ordovician. Throughout the Cambrian and early Ordovician, Laurentia was located at the equator and most of the land was covered in a shallow sea.
These shallow seas were the source of vast amounts of carbonate deposits that were then effected by multiple orogenies that folded and compressed the land into a magnificent arrangement of karst topography which is seen throughout Virginia today. 

The Natural Bridge in Virginia is a 215 foot high, 90 foot wide remnant of a cave system that was created nearly 200 million years ago by what is known as Cedar Creek today.

The original limestone and dolomite, which the bridge is composed of, was deposited around 500 million years ago during the Cambrian and Ordovician. Throughout the Cambrian and early Ordovician, Laurentia was located at the equator and most of the land was covered in a shallow sea.

These shallow seas were the source of vast amounts of carbonate deposits that were then effected by multiple orogenies that folded and compressed the land into a magnificent arrangement of karst topography which is seen throughout Virginia today.