Exposición del Museo del Oro en Bogotá - Banco de la República Explanation of the metallurgy of the Muisca raft by Eduardo Londoño - Museo del Oro The raft is interpreted as picturing the initiation ritual of the new zipa in the sacred Lake Guatavita, where the new ruler would cover himself in gold dust and jump from a small boat into the waters of the 3000 meters high post-glacial lake to honour the gods.