Indus Valley Civilization Script

The script is not alphabetical but pictographic  (about  600+  undeciphered pictographs).

The script  has not been deciphered so far,  but overlaps of  letters  show that  it was  written  from  right  to  left  in the  first  line and left  to right  in the  second  line.  This style  is called  ' Boustrophedon'.