Why have many pre-Inca artifacts survived along Peru’s dry coast?

Many pre-Inca artifacts have survived along Peru’s coast primarily due to the region's extremely dry desert climate. This arid environment prevents the natural deterioration of materials that would otherwise decay in more humid conditions.123

Because of this lack of moisture, delicate organic materials—such as the elaborate textiles produced by ancient Andean cultures—have been preserved in coastal burial sites for centuries. Similarly, the desert sands have helped protect other archaeological remains, including pottery and mummified human remains, allowing them to endure in a state that provides researchers with significant insights into the lives, social structures, and artistic traditions of pre-Inca civilizations.231