UDG

The biggest stone ball, according to the UDG, is right in this area at 13 Q 598163 2284135 (if they were using WGS84 as a datum, which is not mentioned).

Las Piedras Bola: the great stone balls of Ahualulco 2009

The biggest stone ball, according to the UDG, is right in this area at 13 Q 598163 2284135 (if they were using WGS84 as a datum, which is not mentioned).

Las Piedras Bola: the great stone balls of Ahualulco 2009

Burton mentions more than 150 Piedras Bola but the UDG has catalogued only 72 of them, listing each ball's coordinates, size and condition.

Las Piedras Bola: the great stone balls of Ahualulco 2009

In 2007, the UDG appears to have abandoned Curiel's theory in a 266-page book dedicated to the Piedras Bola and their environment and bearing the weighty title, Gestión para la sustentabilidad del area natural Piedras Bola Ahualulco de Mercado, Jalisco (ISBN: 978-970-27-1177-3) by Carla Delfina Aceves Avila et al. For the sake of brevity I will refer to this publication below as "the Bola book."

Las Piedras Bola: the great stone balls of Ahualulco 2009

In 2007, the UDG appears to have abandoned Curiel's theory in a 266-page book dedicated to the Piedras Bola and their environment and bearing the weighty title, Gestión para la sustentabilidad del area natural Piedras Bola Ahualulco de Mercado, Jalisco (ISBN: 978-970-27-1177-3) by Carla Delfina Aceves Avila et al. For the sake of brevity I will refer to this publication below as "the Bola book."

Las Piedras Bola: the great stone balls of Ahualulco 2009

Burton mentions more than 150 Piedras Bola but the UDG has catalogued only 72 of them, listing each ball's coordinates, size and condition.

Las Piedras Bola: the great stone balls of Ahualulco 2009

Smith's hypothesis seems to have been rejected by the University of Guadalajara (UDG) 's Arturo Curiel Ballesteros in 1998.

Las Piedras Bola: the great stone balls of Ahualulco 2009

Smith's hypothesis seems to have been rejected by the University of Guadalajara (UDG) 's Arturo Curiel Ballesteros in 1998.

Las Piedras Bola: the great stone balls of Ahualulco 2009

Actually, nothing was touched – it was an honest mistake on the part of UDG supporters.

DoJ raids p2p operators 2004

Long Live UDG what you did was unfair to all of us at UDG

Gridlock and CWOTMAM 2004