* Relatively New: While the Appalachian Mountains are quite old, they're not the oldest on Earth. They formed about 480 million years ago during the Ordovician and Silurian periods, making them "relatively new" compared to ranges like the Himalayas or the Urals.

* Very Old Rock Veins: The rocks within the Appalachians are actually much older than the mountains themselves. These rocks originally formed in a shallow sea environment and were subjected to intense pressure and heat due to tectonic plate collisions, leading to the formation of mountains. This process created the distinctive rock veins, which contain fossils dating back billions of years.

Let me know if you'd like more information about the Appalachian Mountains or other mountain ranges!