The great smokey mountain chain at one time rivaled the mighty Himalayas in size and scale. Additionally, the Upperpenninsula of Michigan at one time had huge mountains which have been eroded down to hills today.
The basin & range
appalachian mountains
Coastal Plains
the region that has old and rounded mountains is appalaichain mountains.
There are roundede mountains because water wind and ice
The basin & range
appalachian mountains
Coastal Plains
the region that has old and rounded mountains is appalaichain mountains.
because they are very old and have been eroded by the elements
A Peneplain is an old eroded Mountain. A example of a Peneplain is Ouachita Mountain range in OK. The are the oldest peneplain mountain range in US.
The Appalachian Mtns are very, very old, highly eroded folded mountains.
The Appalachian Highlands are old, eroded mountains (the oldest in North America) ranging from eastern Canada to western Alabama
At the link below see some pictures. Notice that the mountains are not very tall. That is because they are old and have been eroded.
Old mountains are usually eroded down to their roots (e.g. the Scottish Highlands) while young mountains are usually high a pointy (e.g. the Himalayas). mountains that are jagged at the top are new mountains that are more rounded are old
There are roundede mountains because water wind and ice
candian shild has old eroded mountantins .