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.