There is a question titled "Does calling a road 'wavy' convey its shape clearly?" which looks like this is a duplicate, but in fact, it's not. In that question, there's talk of a road that slightly bends right and left, not up and down.
So how do you describe a road that is up down and road?
I am confused which word to use. There is one word to describe it. Can I say it is a zig-zag road?