I'm from Utah, my parents ran a business with the word 'intermountain' in it but I remember thinking it was a strange word. And (aside from intermountain health

I'm from Utah, my parents ran a business with the word 'intermountain' in it but I remember thinking it was a strange word. And (aside from intermountain healthcare, which I doubt I would have remembered without your comment) I don't think it's a word I've heard or seen used otherwise.