This a map of the Kingdom of Rengar from my untitled WIP. It's still a pretty sparse map.
The geography is based on part of the island of Sumatra. The land is covered with jungles. Towns are pretty isolated and travel is primarily by water and a few roads.
Note the river the in south doesn't split. It empties into a bay dominated by a large island like the Marajó at the mouth of the Amazon. In the next draft I'll shrink the island to make this clearer.