Casma River


The Casma River which upstream is called Río Grande is a river that crosses northern Casma province in the Ancash Region of Peru. It originates in the Black Mountain Range and drains into the Pacific Ocean. Major tributaries include the Sechín River.
The valley contains the once important and small town of Casma, which had to be rebuilt after being destroyed by the 1970 Ancash earthquake. The new town now is facing the future.

Economy

The main economic activity is agriculture. The valley produces fruits—including avocados, passionfruit, apples, mangoes, pacay, bananas, guayaba, pepino, grapes—and other crops, including corn, cotton, asparagus, chilies and several kinds of beans.

Archaeology

The Casma Valley, a coastal valley situated about north of Lima, Peru, lies along the Casma River, between the towns Chimbote and Huarmey. It is notable for the grand scale of numerous archaeological sites of the Casma/Sechin culture, including stone-faced pyramids and the Thirteen Towers of Chankillo. Sechín Alto is the largest American construction of the second millennium BCE. Cerro Sechin is also from the Sechin culture.

Huaynuná

The coastal preceramic site of Huaynuná, 13 km north of the Casma Valley, has also been investigated by archaeologists. An early public religious tradition of architecture is represented there by a large elevated structure built on a hillside. This is a precursor to the much larger Initial Period religious mounds on the coast of Peru.
Evidence from Huaynuná, as well as the dates from other Casma Valley sites, indicate that larger-scale irrigation agriculture, use of pottery, and weaving did not appear in the Casma Valley area until about 1600 BC, some 200 years later than similar occurrences on the central coast of Peru.
Also, at Huaynuma, potatoes dating to about 2000 BC have been found. This is one of the earliest such discoveries in South America.