Afghan police have seized 237 tonnes of hashish in what Nato-led forces and the British government called the biggest narcotics haul in history.
The cannabis product had an estimated wholesale value of $400 million (€258 million), the Nato-led International Security Assistance Force (ISAF) said.
It was found in a series of trenches in southern Kandahar province, near the Pakistan border, which were then set on fire. One tonne is about the weight of a small family car.
According to reports, Afghan police received a tip about the drugs cache on Monday morning and found it later that day, Isaf said. Three men were arrested during the operation.
"This was the largest ever single find of narcotics in history," British Foreign Secretary David Miliband said in a statement.
"It was so large that two aircraft were brought in to destroy the underground bunker in which the hashish was being stored."
The ISAF said police had also seized about 5.1 tonnes of opium, with an estimated value of $30 million, and arrested 13 drug dealers in Helmand province.
Afghanistan produces more than 90 percent of the world's opium and is rapidly becoming one of the largest producers of cannabis.