Goa and the Blue Mountains, or, Six Months of Sick Leave is a travelogue written by Sir Richard Francis Burton, a British explorer and writer. The book details Burton's journey through the Portuguese colony of Goa and the surrounding Blue Mountains in India. Burton writes about his experiences and observations of the local people, culture, and landscape. The book also includes descriptions of various historical and cultural sites, as well as Burton's reflections on the state of British imperialism in India. Overall, the book is a blend of travel writing and cultural commentary, offering a glimpse into 19th-century colonial India.