Ancient ridges that steered colonial America’s westward push
The Appalachians run roughly 2,050 miles from central Alabama to Newfoundland, a southwest–northeast highland whose roots reach Rodinia’s assembly 1.1 billion years ago. Alternating ridges and valleys blocked east–west travel and shaped how British colonies spilled inland, while coal and timber later built a distinct mountain culture.
Biomes shift from southern Appalachian–Blue Ridge broadleaf forests to boreal Eastern Canadian woods, with red spruce and balsam fir owning cold heights. Modern ranges and Atlantic kin rose in Paleozoic collisions long after those Precambrian minerals first formed. The name traces to a 1528 Narváez expedition hearing Apalchen near today’s Tallahassee among Apalachee speakers.
Much ecological richness survives even as highways still negotiate the grain of the mountains rather than cutting straight across.
The highest summit is Mount Mitchell, 6,684 feet, in North Carolina's Black Mountains. The present mountains were raised by three separate orogenies beginning around 480 million years ago, making them among the oldest surviving ranges. A striking chain of broad valleys, the Great Appalachian Valley among them, runs lengthwise through the belt, while the Allegheny and Cumberland plateaus slope toward the Great Lakes. In eastern Kentucky and West Virginia the rugged dissected plateau gets called mountains though geologically it is not; West Virginia alone has more than 150 peaks above 4,000 feet.
Logging and coal mining long powered the regional economy and drew migrants who helped forge a distinct culture. Spanish mapmakers began applying the tribal name to the mountains after Hernando de Soto's expedition of 1540, and Jacques le Moyne de Morgues first used it for the range on a 1565 map. Allegheny Mountains long competed as a name, and Washington Irving even suggested calling the United States Appalachia or Alleghania. Pronunciation still divides residents: the third syllable rhymes with latch in most areas but with lay in parts of Pennsylvania.
Source: Appalachian Mountains
