Here is a modified version of the default Terra map script.
I have modified the script so that civs spawn in the 'new world' too.
Unzip the file terrapit.py and place it in your publicmaps folder, start a new game and select terrapit.
This one for Warlords
http://forums.civfanatics.com/uploads/67805/Terrapit.zip
Here is one for vanilla Civ4
http://forums.civfanatics.com/uploads/67805/Terrapitvanilla.zip
This one for BTS
http://forums.civfanatics.com/downloads.php?do=file&id=15415
I have modified the script so that civs spawn in the 'new world' too.
Unzip the file terrapit.py and place it in your publicmaps folder, start a new game and select terrapit.
This one for Warlords
http://forums.civfanatics.com/uploads/67805/Terrapit.zip
Here is one for vanilla Civ4
http://forums.civfanatics.com/uploads/67805/Terrapitvanilla.zip
This one for BTS
http://forums.civfanatics.com/downloads.php?do=file&id=15415