Over 400 visitors were stranded in Machu Picchu on Saturday when Peru’s government shut the famed ancient ruins indefinitely in the wake of anti-government protests that are increasingly engulfing the South American country.

The Culture Ministry said it had closed the country’s most famous tourist attraction, as well as the Inca Trail leading up to the site, “to protect the safety of tourists and the population in general.”

There were 417 visitors stuck at the mountaintop site and unable to get out, more than 300 of them foreigners, Tourism Minister Luis Fernando Helguero said at a news conference.

The closure of the Incan citadel that dates to the 15th century and is often referred to as one of the new seven wonders of the world comes as protesters have descended on Lima, many of them travelling to the capital from remote Andean regions, to demand the resignation of President Dina Boluarte.

Until recently, the protests had been concentrated in the country’s south. They began last month after then-President Pedro Castillo, Peru’s first leader with a rural Andean background, was impeached and imprisoned for trying to dissolve Congress.

Demonstrators are demanding the resignation of Boluarte, the former vice president sworn into office Dec. 7 to replace Castillo. They also want Congress dissolved and new elections held. Castillo is currently detained on charges of rebellion.

Cusco, where Machu Picchu is located, has been the site of some of the most intense clashes, leading to significant loss of tourism revenue. The Cusco airport was briefly shut down last week after protesters tried to storm it.

Train service to Machu Picchu has been closed since Thursday due to damage to the tracks.

Some stranded tourists chose to leave by walking to Piscacucho, the nearest village, Helguero said, “but that involves a walk of six, seven hours or more and only a few people are able to do it.”

Tourists who had already bought tickets for Machu Picchu from Saturday until one month after whenever the protests end will be able to obtain a full refund, the Culture Ministry said.