Mine is visual and verbal too, not just a monologue but sometimes an imaginary dialogue with another person.
Yes, I picture a map for directions anniezzz and other visualisations. I can see a map as I type this. It's got the wind direction of this storm on it on it!
And, like NanKate, my inner monologue sometimes becomes verbal, it helps if I'm looking for a certain item if I'm shopping for instance.
Sometimes it is all very annoying and I try to make some kind of order of it; what BradfordLass says is interesting about different layers of thought going on at the same time.
I was always told I was a 'daydreamer' when I was a child but
I must have been concentrating on my education too, but on another level!