Tierra Del Sur is the largest of the new islands in the Caribbean that arose during the Great Calamity. It sits off the coast of Tierra del Norte de los Hispanosns to the east of former Honduras and Nicaragua and to the west of Jamaica. It was for many years territory of Tierra del Norte de los Hispanosns until 2331 where the Empire conquered the island as well as Sur El Refugio to expand their dominance.

The island hosts a civilian population of roughly a hundred thousand which is spread out among numerous farming communities in the island’s interior along with five major towns such as Bloodtooth Den, Cyclone Cove, Blackhelm Bay and Dreadstorm anchorage which are all port towns where clipper ships may dock.

In the north-west is the major military town of Storm Haven. It possesses another population of one-hundred thousand which consists of the military garrison including soldiers, gunners and logistics personnel, the government capital as well as the aerodrome base which docks and services imperial and civilian airships. The airship engineers and support personnel are housed here as well, in civilian condominiums.
The island is a very busy location with military and civilian ships coming and going at all times. This isn’t an easy situation as the waters around the island have been infested with sea serpents and kraken. It’s a situation that's been partially rectified due to the efforts of Clara Asheton and her crew of Lightning of the Sky along with some of her other ships such as the Night Pillager and the Roving Plunderer.