This painting was made for the cover of the last album "Give 'em War" by Spanish thrash metal band "Angelus Apatrida" (http://www.angelusapatrida.com). It was done in Photoshop and Painter and took me several days to complete. It is related to one of the songs of the album, which is about a factory producing warbeasts engineered by scientists.

Here is the initial sketch, which was done in about 2 hours.

Here is the cover + backcover version which shows the extent of the factory. This image doesn't make much sense as a whole because it is quite unbalanced.

And another version for the interior of the booklet without any "activity".