Takaiyosho Mountains

The Takaiyosho Mountains are a mountain range located in the southeastern reaches of the Shou Empire. This range has provided a barrier between the Ryoodo Jungle, the Spice Isles, and further points east, and the rest of the Shou Empire that has only recently begun to be bridged.
The Takaiyosho Mountains are very important to the geography of the Shou Empire. They cause typhoons moving in from the east to either stall out in the Ryoodo Jungle, preventing settlements further inland from being damaged, or cause them to get pushed further south, into the Swamp of the Snake King, where the watery conditions are very good for rice growing.
The mountains themselves also have vast deposits of coal, silver, and gold. The majority of the gold and silver that is used within the Shou Empire is mined from these mountains. The mountains also provide most of the few entrances into the Underdark from the Shou Empire.