It is a great pleasure to invite you to Merida, Yucatun, Mexico, to celebrate the IAGA 2013, 12thScientific Assembly to be held from August 26 to 31, 2013. Merida is the capitol of the state of Yucatán, and has a charming colonial style center. It is situated between world famous Caribbean beach resorts of Cancun and the Mayan Riviera, and top archeological sites like Chichen Itza, Tulum, Uxmal and many more. Mérida offers a wide range of accommodation and has an excellent tourist infrastructure. Merida has an international airport, but is also easily accessible by first class buses from Cancun.