Police in Bolivia have seized more than seven tonnes of cocaine which they believe was destined for sale in the United States.
The drugs were hidden inside a cargo of mineral ore being carried in lorries along a remote mountain pass leading to Chile’s sea ports.
Three men were arrested, a government official said.
The haul has an estimated street value of $350m (£264m; €313m) in the US and came after a 10-month investigation.
In January, Bolivian anti-drug police found eight tonnes of cocaine hidden within another consignment of mineral ore.
Bolivia is the world’s third largest producer of cocaine after Peru and Colombia.