The oldest mountain range in the United States is the Appalachian Mountains. These mountains extend from Canada down through the eastern United States to Alabama.
The Appalachian Mountains are estimated to be around 480 million years old, formed during the Appalachian orogeny, a series of geological events that brought ancient rocks together through tectonic activity. Over millions of years, natural processes like erosion have shaped the peaks and valleys we see today.
The unique history and age of the Appalachian Mountains not only make them significant in geological terms, but they also hold cultural and natural importance. Their biodiversity and scenic beauty have made them a vital area for both conservation and recreation.