For over three years, indigenous Peruvian farmworker Maxima Acuña de Chaupe has refused to allow a U.S.-based multinational corporation to turn her land into an open-pit gold mine, withstanding multiple violent eviction attempts by corporate and state agents.

On Wednesday, Acuña de Chaupe finally saw victory when a Peruvian appeals court struck down a lawsuit levied by the Yanacocha mine—which is 51 percent owned by Colorado’s Newmont Mining Corporation—that had sought to expel and imprison the family for “invading” their own land.

The ruling is an important win in a case that has become a rallying point for local resistance to multinational plunder.

In 1994, Acuña 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 Acuña 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,” Acuña de Chaupe told New 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?” Acuña de Chaupe continued.