Just as the title says....
First off is this one. It's the one which I built the cities and towns such as Nickel's Bay and Gallant that have been mentioned previously on this blog. It's available on Simtropolis under the user ID iota4u (sic). I rescaled it to 3072 x 2560 pixels, thus it is effectively twice the size of the original. I may have shaved off some open ocean cities though.
On the left side of the screen shot is a large island. That is called the Imperial City on a number of Tamriel maps I've looked at. The large mountain sporting a hole is named the Red Mountain. Not exactly the most inspired names but they serve their purpose. I scaled the greyscale height map to 3072 x 2560 pixels and then generated the region using a program called SC4Mapper (sic).
The next one is about the same scale. Once again I rescaled the original to 3072 x 2560 pixels. The original height map is of unknown provenance. I've had it sitting around on my hard drive for around 8 years.
This map sports a bit more highly elevated land marked by permanent snow cover. But the poor Red Mountain looks like it erupted and blew off its top. The Imperial City island is less of a simple blob and bears a bit more of a semblance to what many of the game's mapmaker fans have envisioned it to look like.
This map has a slightly more rugged look to it. Though it was generated from a 3072 x 2560 pixel map it is slightly larger. The Red Mountain is a classic cone volcano and the Imperial City has a jagged shoreline. The numerous jagged bays and sounds give this map a bit more character. Once again, I have no record of this map's provenance.
The final entry is a scaled down version of transbot9's map. This map looks quiet exciting with its numerous islands, convoluted inland sea, sharp peaks, and imposing mountain ranges. But it suffers in that there is little flat land on which one could build farms or cities in Simcity 4. This map could be as small as 1/8th of the original.
On the other hand, this screenshot could be of a map which represents 1/8th of transbot9's map. Its label indicates that this map is one of many I made for the purpose of trying to render a 1:1 scale map of the continent. By my estimation a 1:1 scale map would be more than 8 times the size of this one. At that point the mountains would become broad hills and most of the land would be devoid of features.
I have good reason to believe that the above map is the basis of the region I showed in an earlier blog post about the hamlets of Stormhold and Thorn. To make that, I amalgamated some of my own regions with this one to create a super region.