Acueducto de Amolanas, Heritage aqueduct in Tierra Amarilla, Chile.

The Amolanas Aqueduct is a stone structure with thirteen arches spanning a considerable length and designed to carry water through a channel system. The system concluded with an artificial waterfall point that directed water for power generation.

A businessman commissioned the aqueduct's construction in 1890 to improve copper extraction during a regional mining crisis. It operated for several decades before new dam projects took over its function.

The aqueduct was built in 1890 by Spanish workers from the Amolanas mine, who laid cut stone with cement. Its water came from the Copiapó River and fed the Lautaro plant, where hydraulic screens separated ore by gravity. The ruined administrative house of the plant stands beside the structure.

The aqueduct stands at the foot of the Lautaro reservoir wall, about 95 km from Copiapó and 83 km from Tierra Amarilla. From the Copiapó bus terminal, buses run to the foot of the structure, following the valley road. By car, take the route toward the Lautaro reservoir and turn right toward Mina Amolanas before the reservoir, crossing the Copiapó River past some vineyards.

The aqueduct fed water from the Copiapó River to a 16-metre drop, where it drove the main turbine of the Lautaro ore-processing plant, built by Agustín Edwards Ossandón after he bought the Amolanas mine from Teófilo Gómez in 1890. Spanish workers from the mine raised the cut-stone and cement channel. It stopped working in 1928 when the Lautaro reservoir was built.