Madre is actually just a mistake on disney's part. For some reason or another all Padres Del Fuego files are listed as Madre_del_fuego instead of Padre_del_fuego. Hadn't seen the other two places in the files, I'll have to check that out.
But yeah, as everyone else said the Kraken files have been there for quite some time, disney even posted a 3d model without textures a while back. Always neat to run across stuff like that though.