Cave of Forgotten Dreams ★★★

As a 60 minute documentary this would make for fascinating and compelling viewing.
As a 90 minute feature it suffers from being filled out with, oh about 30 minutes of padding ...
Herzog's usual calm & soothing narration carries you through, though occasionally his fondness for tortuous metaphors make you laugh despite the fact that you have no clue what he's talking about ... and suspect that he doesn't either.