2016 Study Flagged Ouro Preto Landslide Site as High-Risk, Years Before Collapse

On Thursday, January 13, 2022, a hillside in the center of Ouro Preto, Minas Gerais, gave way. The collapse destroyed the Solar Baeta Neves, a mansion built in the 1890s by a prominent merchant family and the first neocolonial structure ever constructed in the city. The house had been painstakingly restored a decade earlier—hand-laid wooden ceilings, inlaid floors, all of it gone in moments. The loss was not merely architectural. Ouro Preto's entire historic center, a collection of colonial and neocolonial buildings clustered on hillsides, had been designated a UNESCO World Heritage site in 1980. The Solar Baeta Neves was part of that protected ensemble. Its destruction was the destruction of irreplaceable cultural memory.

What made the collapse particularly bitter was that it was not a surprise. In 2016, geologists from Brazil's Geological Service, working under the Ministry of Mines and Energy, had surveyed the Morro da Forca—the hill where the mansion stood—and classified it as high-risk for landslides. Their report was explicit. The soil was thin. The bedrock contact was abrupt and unstable. Buildings at the base of the slope faced direct danger from material moving downslope. The geologists recommended geotechnical studies, the installation and maintenance of drainage systems, and continuous monitoring during heavy rains. None of this was done.

The hazard was not new. Records showed that the slope had been moving, in small ways and large, since at least 1979. In 2012, after an earlier landslide in the area, the municipal government had interdicted the properties—declared them unsafe to occupy. That same year, the mayor at the time, Ângelo Oswaldo, had applied for federal funding through the PAC das Encostas, a national program for slope stabilization, specifically to protect the Morro da Forca and prevent exactly this kind of disaster. The application was approved. The money, however, never arrived at the site. After Oswaldo left office, subsequent administrations did nothing.

In April 2021, nine years after the initial request, the city finally received R$35 million in federal funding for slope protection work across Ouro Preto. But the money was directed elsewhere—toward road repairs on the MG-129 highway and paving work near the district of Lavras Novas. The Morro da Forca, flagged as high-risk five years earlier, remained unprotected.

The Federal Public Ministry opened an investigation on the day of the collapse. Prosecutors requested detailed information from the National Institute of Historical and Artistic Heritage about the extent of cultural damage and the identification of other at-risk properties. They also asked the city government whether additional collapses were possible and what measures would be taken to prevent them. The institute responded that any assessment of whether the Solar Baeta Neves could be rebuilt would have to wait until the debris was cleared and the danger of further slides had passed.

The mansion itself had a documented history worth preserving. The Baeta Neves family had purchased the land in 1890 and completed construction two years later, positioning the house near the railroad station at a moment when that area represented the city's economic center—before the state capital moved to Belo Horizonte and Ouro Preto's fortunes shifted. The restoration program, Monumenta, had invested R$373,500 in bringing the structure back to condition and finished the work in 2010. For two years it stood restored. Then it was sealed off. Then it fell.

The collapse exposed a chain of institutional failure: a geological warning unheeded, a federal funding request delayed for years, allocated money redirected to other projects, and a site of documented danger left to deteriorate. The Solar Baeta Neves, the first of its architectural style in the city, built by hand in the 1890s, restored at public expense in 2010, was gone by 2022. What remained was the question of whether the city would learn from the loss, or whether other structures on other slopes would have to fall before the warnings were finally acted upon.