An environmental success story: Laguna de los Tollos
We hear with depressing regularity about natural habitats being destroyed in the pursuit of profit. So it's good to learn about a project where the opposite has happened, thanks to the hard work and persistence of a group of environmental conservationists. Such a project is the Laguna de los Tollos , near the town of El Cuervo just north of Jerez. Until 1976 this lake was an important stopover for wetland birds, including flamingoes in their thousands, winging their way between the Coto Doñana and the Laguna de Fuente de Piedra in Málaga Province. It was also a breeding site for purple swamp hens (aka purple gallinules), crested coot and the rare white-headed duck. Then along came Hefran SA, a mineral exploitation company, who dug a pit next to the lake to extract the special clay needed to produce Fuller's Earth - a mineral used in the pharmaceutical industry and in the production of cat litter. The effect on the lake was catastrophic. The water level dropped a