Mayan glyph for the word rain and also the number 12.  This stained glass pattern is made from what I found on the internet and on wikipedia (thank you wikipedia) for the tzolkin calendar.  To me this is a crazy looking angry person's face that has really bad teeth.  LOL.  It could also be an animal.  At any rate I made the sky dark blue for rain and clouds and the base green for the tropical surroundings.