The interesting Sechín site dates to about 1600 BC, making it among the oldest in Peru. There are two main buildings at Sechín, one made of adobe and one made of stone. The ruins are set against a backdrop of a huge, barren, rocky mountain which rises immediately behind the ruins. The square temple is completely faced with carved stone monoliths, more than 500 of them, depicting Sechin warriors and gruesome battle scenes such as dismembered arms and legs and blood gushing from eyes and mouths. The carvings are very well preserved as the whole complex had been covered by dirt by a natural disaster. The site was excavated in 1937 by J. C. Tello, a well known Peruvian archeologist.
Also on the site is a small museum with information on Sechín and a model of the ruins. Not much is known about who built these ruins, but it seems it is related to the Chavin culture.