Question: Where does the cumberland river begin and end?
Disambiguated questions and answers: question: Where does the cumberland river begin?
Where does the cumberland river end?
answer: Martin's Fork
the Appalachian Mountains
a source in the Appalachian Mountains
Clover Fork
Poor Fork
three separate forks that begin in Kentucky
Ohio River at Smithland
the Ohio River near Paducah, Kentucky, and the mouth of the Tennessee River
The Ohio River
Natural Questions answer: Ohio River (from the Wikipedia article "Cumberland River")