Calera de Barquín, Colonial limestone site in El Palmar National Park, Argentina
Calera de Barquín is a lime-processing site in El Palmar National Park comprising two furnaces, a dock, three structures, and a cemetery built with limestone mortar. The complex sits on the Uruguay River and preserves original walls that still stand several meters high.
Indigenous people from Jesuit missions first operated a lime kiln here starting in the 1600s. Manuel Antonio Barquín restarted production in the late 1700s, giving the site its lasting name.
The lime production shaped early industrial life in the region, where workers prepared raw materials for distant markets. The ruins reveal how this site brought together people from different communities and created economic ties across river territories.
Access is through pathways starting from the National Park administration building located north of the camping area. Wear sturdy shoes as the paths are uneven and the ruins have rough surfaces to navigate.
The walls display construction techniques from different periods as successive operators made repairs and modifications over centuries. These layers tell the story of how building methods evolved to keep the structures standing.
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