Possible solutions for the construction sequence of many crop circles.
crop circles, keys of enigma, links, photos, video
Book by Carolyn North describes crop circles with many photos.
Well thought-out articles about new angles on crop-circles. Has an excellent links' page.
A new crop circle portal with forums, galleries and articles.
Has a great interactive archive of crop circle formations. Also includes articles. (Macromedia Flash required)
An independent community for the exploration of the crop circle phenomenon based in Germany.
Controversial science web site, focusing on scientific study of "non-mainstream" topics such as crop circles. Comparison of crop circle theories.
Crop Circles - Answers to How and Why - Recent Visit by Prash, Veno & Taina - New Circle with a Key shape discovered in the Avebury stone circle area ...
Our site is dedicated to study of subtle-energy research including crop circles, resonant viewing, and extraterrestrial phenomena.