Covered in mud, people enjoy a traditional carnival celebration in the historic city of Paraty, Rio de Janeiro. Originating in 1986 with teenagers playing in the mud, this vibrant tradition has evolved into a celebration where participants from different parts of the country express joy and freedom. "I feel like a child again," says 26-year-old music teacher Gabriela Nunes. "It's very liberating, enjoyable, and relaxing," she adds. IMAGES AND SOUNDBITES