From Monkey Island wiki
Hi guys, there's a little mistake in this article, namely in the paragraph about the second game "LeChuck's Revenge". It sais:
"It is said in the fourth game that Dinky Island and Monkey Island are connected by a series of underground tunnels (where the confrontation between Guybrush and LeChuck takes place)."
When talking in Part V of "The Curse Of Monkey Island" (third game) to LeChuck, one can ask him about Dinky Island and he'll tell about these series of tunnels. He will also confirm, that Guybrush reached Monkey Island at the end of the second game.
- Added the reference to the third game.