The ruling is an important win in a case that has become a rallying point for local resistance to multinational plunder.
In 1994, Acuna de Chaupe and her family built their home in Tragadero Grande in the region of Cajamarca next to the Blue Lagoon of Celendin. This lake was sought after for the building of the open-pit Conga gold mining project--an extension of the one at Yanacocha.
This mine is widely opposed by peasant, worker, and indigenous peoples in the region, who have protested its resource extraction, exploitation, displacement, and environmental harm with with mass marches and general strikes.
When Yanacocha sought to buy Acuna de Chaupe's land in 2011, she refused, in a bid to protect the environment and her family's home.
"I may be poor. I may be illiterate, but I know that our mountain lakes are our real treasure," Acuna de Chaupe toldNew Internationalist Magazine two years ago. "From them, I can get fresh and clean water for my children, for my husband and for my animals!"
"Yet, are we expected to sacrifice our water and our land so that the Yanacocha people can take gold back to their country? Are we supposed to sit quietly and just let them poison our land and water?" Acuna de Chaupe continued.
What ensued, according to Acuna de Chaupe, was a corporate intimidation campaign, orchestrated by the mining company with the aid of private security and the Peruvian state.
Acuna de Chaupe says she and her family have faced at least three violent eviction attempts by the company, aided by Peruvian police and soldiers. One beating left Acuna de Chaupe and her daughter unconscious and landed her son in the hospital.
The plight of Acuna de Chaupe and her family sparked outrage and support from regional and international organizations, including the Women's Movement of Peru and World March of Women. At the recent People's Summit in Lima, Peru, climate justice advocates held a large rally in solidarity with Acuna de Chaupe.
When Acuna de Chaupe refused to give in, Yanacocha sued her and her family on charges they were illegally occupying their own land. In August, a judge sentenced four members of her family to "to two years and eight months of suspended imprisonment for not vacating the land," Telesur reports. "The judge also ordered the family to pay close to US$2,000 in penalties."
Wednesday's ruling, however, tosses out all of these sentences.
"I want to thank the judges of the court of justice of Cajamarca for being impartial and applying justice and for not permitting that we the farmworkers suffer at the hands of Yanacocha," Acuna de Chaupe declared following her acquittal. "I pray to God to take care of them. During the four years this process has lasted, many authorities tortured me, defamed me, and persecuted me. But here we have good authorities."