It's a 3D model of a tower. Created for Megaglest, thats why a .g3d file is in the archive, too.
Texture is included.
Licensed under Public Domain
I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.
In case this is not legally possible,
I grant any entity the right to use this work for any purpose, without any conditions, unless such conditions are required by law.