Peru drugs case: Inside Lima's Ancon 2 prison
18 August 2013 Last updated at 12:01 BST
Two British women, Michaella McCollum, from Dungannon and Melissa Reid, from Lenzie near Glasgow, are being held in Peru, accused of trying to smuggle £1.5m worth of cocaine.
The pair, who are both 20, claim to have been kidnapped and forced into carrying the drug by gangsters, and are likely to appear in court next week.
If convicted, they could receive lengthy prison sentences.
Almost all of the foreigners serving sentences in Peru are housed in a modern prison facility Ancon 2, which is about an hour's journey north of the country's capital, Lima.
The BBC's Will Grant was given exclusive access to the prison, which has a new women's wing.