The five: underwater discoveries

From high in the Andes to the world's oldest submerged city, here are five significant discoveries in subaquatic archaeology

On 1 April, a study published in the Proceedings of the National Academy of Sciences in the US highlighted the significance of a recent expedition that made multiple finds in the depths of Lake Titicaca. Among gold medallions, precious shells and stone artefacts were the bones of sacrificed young llamas. The discovery provides new insights into the religious rituals of the pre-Columbian Tiwanaku state that dominated in the Andes region between AD500 and 900.