Add-on:Metacarta World Map
From World Wind Wiki
|Vector Map Level 0|
|Latest release||/ 2006-10-25|
This add-on has map layers served by MetaCarta from the public domain vmap0 (Vector Map Level 0) data.
Vector Map Level 0 is an updated and improved version of the National Imagery and Mapping Agency's (NIMA) Digital Chart of the World (DCW). The VMap Level 0 database provides worldwide coverage of vector-based geospatial data which can be viewed at 1:1,000,000 scale.
To install, just put the xml file in your Config/Earth directory.