Full map at scribblemaps.

Sep. 2013, Washington.

Aug. 2013, Colorado and Utah.

Jun. 2012, Switzerland, Italy, and France.

Dec. 2011, Arizona, New Mexico.

Dec. 2010, Florida.

Jul. 2009, South Dakota, Wyoming.

Jun. 2008, Shanxi, China

Jan. 2006, Germany and Paris.

Jul. 2004, Sichuan, Yunnan, Guizhou, China.