Land Southward

Opposite the Land Northward is the Land Southward. The Nephites called part of this land Zarahemla:

31 And there came forth poisonous serpents also upon the face of the land, and did poison many people. And it came to pass that their flocks began to flee before the poisonous serpents, towards the Land Southward, which was called by the Nephites Zarahemla. (Ether 9:31)

For the Jaredites, they kept the Land Southward a wilderness for hunting:

21 And they did preserve the Land Southward for a wilderness, to get game. And the whole face of the Land Northward was covered with inhabitants. (Ether 10:21)

Just like the Iroquois did: 

In exterminating the Eries, the policy of the Iroquois seems to have been to remove a powerful rival rather than to acquire territory. Because the country of the Eries lay adjacent to the Senecas, it was given to that nation, and for many years after the exodus of their enemies it was only occupied by them as an occasional hunting ground and where deer, boars, and wolves held unmolested possession. (William Adams, ed., Historical Gazetteer and Biographical Memorial of Cattaraugus County, N. Y., 1893, p. 25)

 The Nephites called this northern wilderness Bountiful:

31 Thus the land on the northward was called Desolation, and the land on the southward was called Bountiful, it being the wilderness which is filled with all manner of wild animals of every kind, a part of which had come from the land northward for food. (Alma 22:31)

The greater land area on the north was at times called Mulek, and on the south Lehi:

Now the Land South was called Lehi, and the Land North was called Mulek, which was after the son of Zedekiah; for the Lord did bring Mulek into the Land North, and Lehi into the Land South. (Helaman 6:10)

More times than not, the two land areas were simply referred to as Land North, Land Northward, or Land South and Land Southward:

And they began to know that the Son of God must shortly appear; yea, in fine, all the people upon the face of the whole earth from the west to the east, both in the Land North and in the Land South, were so exceedingly astonished that they fell to the earth. (3 Nephi 1:17) 

And it came to pass that in the latter end of the eighteenth year those armies of robbers had prepared for battle, and began to come down and to sally forth from the hills, and out of the mountains, and the wilderness, and their strongholds, and their secret places, and began to take possession of the lands both which were in the Land South and which were in the Land North, and began to take possession of all the lands which had been deserted by the Nephites, and the cities which had been left desolate. (3 Nephi 4:1) 

…there being a small neck of land between the Land Northward and the Land Southward. (Alma 22:32) 

…did go forth from the Land Southward to the Land Northward (Helaman 3:8) 

…did cover the whole face of the land, both on the Northward and on the Southward, from the sea west to the sea east. (Helaman 11:20) 

…both on the Land Northward and on the Land Southward. (3 Nephi 6:2)

The Land Southward is composed of sub-areas with distinct geographical borders including Bountiful, “mystery area,” Zarahemla, Hermounts, Nephi, and Ishmael. Within these sub-areas are further divisions with less distinct geographical boundaries such as towns, villages, and cities. 

Researchers should be aware that land names can apply to more than one area, and one area may have more than one name. Going from north to south:

Land of Bountiful/Line Bountiful

Land  of Zarahemla

Land of Nephi

Land of Ishmael/First Inheritance