Direct .pdf download: Crochet Curly Whirly Scarf.

NB. The instructions for this scarf are written using English crochet terms, but for US crocheters who might want to use the pattern,
English dc (double crochet) = US sc (single crochet)
English tr (treble) = US dc (double crochet).
Chains (ch) and slip stitches (sl st) are the same on both sides of the Atlantic