1) The island of Geem is more or less the size of Rhodes Island.
a. It is vaguely circular with a lake near the center. The lake is deep enough to go right through, but is bigger on top than bottom. There is a mountain shifted off center towards one edge.
2) The island is descending at approximately 6” a day and is around 20 miles from the ocean. This gives it about 578.23 Terrestrial years before it contacts the ocean.
3) The top side is a fairly standard agrarian human feudal society. The land is small enough not to support any dukes, earls or kings. There are three counts each with a county. Each has at least one baron reporting to them. The counties are divided by what they produce. One grows corn. One grows wheat. One is forested that produces wood. Theoretically the counts are vassals of a duke on the large land below who is vassal to a king. Even the counts have never seen the duke they report to as he has never visited the land. He does send representatives and people to collect grain and wood. The king is even less well known. He lives some where on that big land 20 miles below. No one in the land has ever seen him, and only a few scribes even know his name.
a. Theoretically the duke or king could request the counts send soldiers, but this has not happened in centuries.
4) The bottom side has clans of dwarves, hobbits and a few gnomes. No over all structure outside of the clans, but they trade well together and have a tradition of helping each other. Once in a while trading groups come through from other lands and trade with them, but there is no formal trade system. Most of the bottom side is grass land with smaller gardens and lots of sheep. The hobbits tend to live on the surface, the dwarves in the ground, but both do both. The gnomes do both as well.
5) The top and bottom trade with each other fairly often, but without any formal method. Most metal work is done on the bottom side by the dwarves. Most wood work on the top by the humans. That is the biggest trade between the sides. There is some of different food and produce as well with more fruit grown below and grains above. As the wood is the biggest trade item from the top side, that county has the strongest ties to the bottom side.
6) Neither side of the island has much in the way of cities. On the top each of the counts lives in a town by the lake. None of the towns are overly large. The bottom side has many villages and a couple of small towns, but no large towns.
7) On the surface of the ocean below is a much, much larger island with a very large civilization.
a. As it has reached the water, its drop rate has slowed by a factor of 100. (2” a terrestrial year. 18 feet per terrestrial century.)
b. It has trade with the islands near it, including the home one of the players.
c. There is a strong government on the large land, with kings, dukes, earls and such.
d. There is no known plan for dealing with the big land sinking.
e. Coins come from trade with the big island below.
i. There is plenty of metal trade on Geem, but no coins are made locally. Barter is common and credit can often be had based on an individual’s reputation.
8) There are no other islands very close.
9) Elves visit from time to time. Some half elves happen on the human side, but it is fairly rare.