Lyric discussion by munchaussen 

Cover art for Mudmen lyrics by Pink Floyd

With the few pictures of the movie La Vallee I've seen, one was of some aborigins coverd with mud, so I guess (this is pure speculation, since I haven't seen the movie) that's what the song is about... or, I'd rather say, I wouldn't be surprise if this piece of music was used for a (the?) seen where they covered themselves with mud. And oh! Yes, Gilmour is great on this one but, listen carefuly for the organs... this is where the magical greatness of the music come from here, especialy in the great guitar gig.