Appalachian Trail  is a huge national trail
I've never heard of it, so what is it exactly?
Appalachian Trail  is a huge trail for hiking and walking
Oh cool, I really want to visit it sometime then.
Appalachian Trail is really cool and has been a scenic national trail for years
Scenic huh? That makes it sound even better!
the Appalachian Trail  seems very nice
From how you are describing it, I agree!