In 1873,
Thomas Hutchinson—a businessman interested in culture—published his book
Two years in Peru: with exploration of its antiquities. He, together with other scholars such as Antonio Raimondi, had already recognised the Huaca Huallamarca site as distinctive and important, and Hutchinson carried out explorations with scientific aims. In his account of the architectural site he described a stepped building with three levels, recording its measurements, altitude, characteristics of local flora and fauna, the climate and its fluctuations, and highlighting the recovery of funerary objects such as human remains, textiles, ceramics, etc. The first archaeological excavations were carried out in 1942 and were directed by
Julio C. Tello, who stated that Huaca Huallamarca's boundaries were marked by the Huatica and Surco canals, the latter so large and powerful that it is called a river. Tello also identified three main moments of occupation: from the beginning of the
Lima culture period (
2nd century BCE to
7th century AD), through the
Yshma (11th century AD), to the
Inca period (15th–16th centuries AD). The construction of the Huallamarca pyramid began with the Huallas from 200 BC to AD 200. They placed platforms one on top of another to achieve different levels on which buildings, rooms and corridors were erected. They used it as a ceremonial centre, so this is considered the first phase of the huaca. It was later abandoned and reused, known as the second phase, in which it was used as a cemetery from AD 900 to AD 1300 by the Lima, Yschma, and Chancay cultures. Between 1991 and 1992, three seasons of archaeological excavations were carried out under the direction of Lic. Clide Valladolid, within the framework of the Research, Conservation and Enhancement Agreement for the Site between the Municipality of San Isidro, the Museum of the Nation and the National Institute of Culture. Later, between October 1997 and August 1998, excavations were carried out on the southwest side of the pyramid to secure the future renovation of the museum. == Description ==