In an oak wood spanning the border of Spain and Portugal, an ancient sight unfolds: wild horses, not saddled or shoed, but roaming free as they did centuries ago.
Wild horses graze at the Donana National park, southern Spain, on June 15, 2009
Farming has declined in Spain, leaving the countryside deserted, conservationists say. Now the wild things are coming back: wolves, vultures and rare herbivores.
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