|Location|| Between Tropics|
and Snow Peninsula
The Cliff Peninsula is very similar to the Snow Peninsula, as they're both from the Ocean Cove, and they both slowly descend slowly into the ocean. The Cliff Peninsula is almost never visited, as it is extremely challenging to get there, and that a lot of players do not know about the Cliff Peninsula, and the reason for that is because it is very unclear and hard to see.
The Cliff Peninsula and the rest of the Tropics Biome did not exist before, however the Snow Peninsula for some reason did exist in the game for an unknown reason. It's most likely there so that you wouldn't see the void as easily, however now it's strongly believed that the Ocean Cove which is made from The Cliff Peninsula, and the Snow Peninsula will contain a biome accessible from the Taiga Mountain Passage or from boats which may be released in a future update.