I just know that a rockfall from one of the mountains in PA is what killed my aunt's dad. If they have boulders the size of small VW Bugs rolling down the hills, then that's what I would consider a mountain.

I'm from Nebraska. Anything larger than a small hill is a mountain to me.

The largest mountain's that I've seen so far (and I havent seen many) has been a mountain in Denver that I could sorta see from the airport, and the Black Hill's in South Dakota. (went to see Mt Rushmore last april on my first vacation with the boyfriend. It was GREAT! altho, I dont like how hilly everything is up there. I'm acrophobic...drove the boyfriend nuts because I kept freaking out when driving up and down the mountains)

Before seeing those mountains, the largest "mountain/hill" I'd seen was the bluffs in Council Bluffs, IA (across the river from Omaha) I havent been to many places that have mountains nearby.