First Episode of OSTK (Open Source Trickkites). A series about flying kites which have plans available in the public domain. Le Quartz (step by step version) by Christian Derefat is featured in this first episode. Such a fun kite and easy&cheap to build. Thanks for sharing the plans and many other great designs, Christian!
Link to plans: http://www.tweelijners.com/tom/tomskitesite-en/home.html
Location: Zuiderstrand, Scheveningen, Holland