I've made a small (108 provinces) map where provinces revolve around a central peak.
I'm not really done with it as I think there may be balance issues.
The northern continent is connected to the southernmost cave.
I wonder whether there are too many water provinces, because even with sailing, it's not easy to reach the north continent across water.
-EDIT-
I connected the island to both continents in order to act as a bridge.