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Mexico inaugurates dam that is flooding Indigenous sites

FILE - In this April 3, 2020 file photo, Mexican President Andres Manuel Lopez Obrador waves to supporters at the end of a visit to a Social Security Institute hospital that will be converted to receive patients infected with the new coronavirus, in the Coyoacan borough of Mexico City. Lopez Obrador said Thursday, July 30, 2020, that he is creating a central national purchasing and distribution agency for medicines, vaccines and medical equipment amid persistent shortages during the pandemic and the arrest of a doctor who advised a patient's family to buy their own medications. (AP Photo/Rebecca Blackwell, File)
FILE - In this April 3, 2020 file photo, Mexican President Andres Manuel Lopez Obrador waves to supporters at the end of a visit to a Social Security Institute hospital that will be converted to receive patients infected with the new coronavirus, in the Coyoacan borough of Mexico City. Lopez Obrador said Thursday, July 30, 2020, that he is creating a central national purchasing and distribution agency for medicines, vaccines and medical equipment amid persistent shortages during the pandemic and the arrest of a doctor who advised a patient's family to buy their own medications. (AP Photo/Rebecca Blackwell, File)
MARK STEVENSON

MEXICO CITY (AP) — President Andrés Manuel López Obrador inaugurated a dam in northern Mexico on Wednesday even though work was symbolically suspended by anthropologists because it is flooding thousand-year-old Indigenous sites containing rock carvings and the remains of pre-Hispanic dwellings.

The Los Pilares dam is the latest in a series of government infrastructure projects that López Obrador has promoted but that have caused divisions and anger in Indigenous communities.

The area round the Mayo river in Sonora state is home to the Guarijío people, who also call themselves Macorahui. The Guarijío, of whom only a little over 2,000 remain, are divided over the dam.

In a strange turn of events late Tuesday, authorities of the National Institute of Anthropology and History put suspension stickers on the Los Pilares dam, a move used to close building projects that threaten archaeological remains. However, the 73-yard (meter) high flood-control dam, which has cost about $75 million since construction started in 2013, is already built and water levels are rising behind it.

“As a serious institution, we had to send a warning that there is cultural legacy there that must be saved,” said anthropologist José Luis Perea, director of the institute's office in Sonora.

Of the 44 sites identified in the area, 34 hold remains of homes or temporary camps. Eleven sites hold about 140 ancient rock carvings, which depict human, animal and abstract forms.

During an inspection of the sites at the beginning of August, "we realized that the dam has already flooded 10 sites with petroglyphs” and as many as 20 sites in total may soon be under water, Perea said.

The suspension stickers were largely symbolic because archaeologists reached an agreement with local and federal water agencies to wait until Mexico's rainy season ends in October to allow water levels behind the dam to fall and rescue what they can from the ancient sites.

Archaeologists will study and remove 1,100-year-old ceramics and stone tools from the river valley and make three-dimensional models of the petroglyphs before water levels rise again. The models will be used to make reproductions. Removing the carvings appears out of the question.

Because water levels will vary by season, some sites will always be under water in the future, but some for only part of the year. Experts hope to apply some protective treatment to the rock carvings to help them survive better.

The Guarijío, many of whom raise cattle, were promised benefits in return for allowing the dam, but it is unclear how much has reached them.

“Part of the (Guarijíoi) authorities and people are in agreement with it, and part of the authorities and people don't agree with it," Perea said.

Juan Rodriguez, a Guarijío representative who spoke at the inauguration of the dam, said, “I think it will benefit the tribe.” But he pointedly asked for help "with all the promises that have been left hanging,” mentioning housing, schools and health care.

López Obrador said too much government money had already been invested in the dam by the time he took office in 2018 to halt the project. The president, who fiercely argues against wasting government money, has used a similar argument to continue with projects in other parts of the country.

“Don't worry, we are going to fulfill all the promises ... so that you don't remain on the margins of development,” López Obrador told the Guarijío representatives.

It is not the first time that López Obrador's love of government infrastructure projects has put him at odds with Indigenous communities.

In July, he inaugurated the start of construction on the “Maya” train, which would run some 950 miles (about 1,500 kilometers) in a rough loop around the Yucatan peninsula. The train will run from Caribbean beaches to the peninsula’s interior while stimulating economic development around its 15 stations. The government says it will cost as much as $6.8 billion, but others say it will be much more.

Some Mayan communities have filled court challenges against the train project, arguing that it will cause environmental damage. They also say they were not adequately consulted about it or they will not share in its benefits.