From the deserts to the western shores to the swamps in the east and plains in between, Calimshan provided a range of environments, including the Embooli Mountains.
The Marching Mountains were a heavily forested mountain range on the northern border of Calimshan. Three major rivers ran through the range. Somewhere in the mountains was once a dwarven kingdom called High Shanatar. Like many of the shield dwarf kingdoms this was also abandoned thousands of years ago and forever lost.
The Calim Desert was a rocky desert that spanned much of western Calimshan. A single major highway ran through it from Calimport to Memnon where caravans dodged bandits from various raider factions.
Some of the bluest crystal clear water made up the Shining Sea. The Sea rested south of Calimshan and linked lucrative trade to Chult, the Shaar, Tharsult, and countless other places. The Shining Sea was famous for good reasons, not only as a mercantile hub for wealthy sea captains, but was also a wellspring of and adventure for swashbucklers and corsairs.
Calimshan has now entered the epoch of its 15th period, I pray for us all that Neshm'eera arrives soon— Ibn-al Qo'udra