The Lavatio was a Roman ceremony involving the ritual washing of cult statues, most notably Cybele's image bathed in the Almo River on March 27. Priests carried the goddess's statue in solemn procession to the river, performed purification rites, and returned her cleansed to the temple. The ritual renewed divine power and sanctity. In poetry, Lavatio represents ritual purification, the maintenance of sacred presence, and water's cleansing power, appearing in works exploring lustration ceremonies, the physical care of divine images, processional religion, and Roman understanding of cult statues as requiring periodic renewal through contact with purifying waters.

Lavatio's ritual bathing of sacred statues, particularly Cybele's image in the Almo River, represents Roman purification practices and the care of cult images. The washing ceremony demonstrates beliefs about statues' need for periodic ritual cleansing and renewal. Understanding Lavatio helps illuminate Roman religious practices involving cult statues and their maintenance. The festival illustrates Roman attention to ritual purity and the regular purification of sacred objects as necessary for maintaining divine favor.