I am looking for a map (or maps) for HoMM III.

Once, while playing the fourth installment for the first time, I stumbled upon a very interesting and hilarious map... the problem is, I don't remember the map's name and can't provide an example...
So, the plot was as follows: a talking horse and its rider wandered the world, meeting various creatures and doing something... in general, it was fun to play through...

Question: are there similar maps for the third installment?