Three men have been charged following the discovery of a large-scale cannabis factory in an underground former nuclear bunker in Wiltshire.
The former Ministry of Defence bunker, RGHQ Chilmark, was raided on Wednesday.
Officers found several thousand cannabis plants - estimated to be worth £1m - being grown in 20 rooms.
The men are charged with conspiracy to produce a quantity of cannabis and conspiring to hold another person in slavery/servitude.
Martin Fillery, 45, of Pedwell Hill, Ashcott, Bridgwater, Plamen Nguyen, 27, of Bartholomews Square, Horfield, Bristol, and Ross Winter, 30, of Maytree Avenue, Bristol, will appear before Swindon Magistrates' Court on Saturday.
Wiltshire Police said three other men arrested at the site, who are all over the age of 18, have been released without charge and "suitable arrangements will be made".
The former Ministry of Defence bunker was built in the 1980s to protect local dignitaries and government officials in the event of a nuclear attack.