Rocky Mountains, Im pretty sure.
Appalachian Mountains and Rocky Mountains
The Rocky Mountains
The Rocky mountains.
The Rocky Mountains is the answer
The Rocky Mountains and the Sierra Nevada Mountains.
They are called the Rocky Mountains
the rockies
The rocky mountains
The Rocky Mountains
Appalachian Mountains and Rocky Mountains
rocky mountains
The Rocky Mountains
The Rocky Mountains.
Some examples of mountains in the western US with Spanish names include Sierra Nevada, Sangre de Cristo Mountains, and San Juan Mountains.
The Rocky Mountains
Sierra Madre Occidental.
The Rocky Mountains