LA PAZ, BOLIVIA—Bolivian and Belgian underwater archaeologists from the Huinaimarca Project recovered more than 2,000 objects from Lake Titicaca. Among the artifacts were 31 gold fragments that were found near the Isla del Sol, where tradition holds that the founders of the Inca Empire emerged from the water. They also found 1,500-year-old stone vessels, incense containers, and figurines, and pots estimated to be between 500 and 800 years old.