The Mina da Passagem, located in Mariana, Minas Gerais, is the world’s largest gold mine open to public visitation. On January 8, 2017, visitors experienced a guided tour of this historic site, which has been operational since the early 18th century. The tour includes a descent into the mine via a trolley, offering a glimpse into the extensive tunnels and underground lakes. This visit provides a unique opportunity to explore the rich history and impressive engineering of one of Brazil’s most significant mining sites.