The Americas' last prison island has become a tourist bioreserve

Islas Marias, off Mexico's west coast, was known as "Mexico's Alcatraz" and was the Americas' last island prison until the penal colony closed in 2019, following controversy over terrible conditions and a history of political prisoners. Now, Mexico's navy, which runs the island, is allowing tourists to visit on restricted weekend tours. Journalist Jamie Fullerton spent the weekend there.