Bill Dan Balancing Rocks (平衡石塊藝術)

Перфектен баланс | Veselba.eu http://www.veselba.eu/photos/%D0%BF%D0%B5%D1%80%D1%84%D0%B5%D0%BA%D1%82%D0%B5%D0%BD-%D0%B1%D0%B0%D0%BB%D0%B0%D0%BD%D1%81/
The Rocker : My Little Friends Balancing Rocks http://billbalance.blogspot.com/2010/03/blog-post_27.html
سوار کردن سنگهای معمولی برروی هم با کنترل اعصاب - عکس http://iranianuk.com/article.php5?id=62927

The Rocker : World Wide Phenomenon: 02/13/11http://billdan.blogspot.com/2011_02_13_archive.html

The Rocker : My Little Friends Balancing Rocks: February 2011 http://billbalance.blogspot.com/2011_02_01_archive.html