Hi Realdarko!
In the tex/summer folder wich is part of the zip_islands map
I found the "fields_dry2a.tga"texture.
zip_Islands V.1 has this link:
viewtopic.php?t=12536
Correction:
folder were I found the texture is:
....\MODS\MAPMODS\Maps\_Tex\land\summer\zip_Islands\fields_dry2a.tga
This folder is delivered with zip_island.map,
Link see post above.
download the sfs extractor, it has a file in its folder called filelist.txt which contains every path you need
cheers