Sanctuary of Our Lady of the Assumption in Chacas

Mama Ashu's history spans from pre-Inca ceremonial center through Augustinian evangelization to earthquake devastation and artisan-led rebirth. The sanctuary embodies Peruvian religious syncretism and the creative resilience of highland communities.

Before the Spanish arrived, this high ground in Ancash served as a pirushtus—a native shrine where the huanca Piedra de Chacas was venerated. This idol, one of the most important ceremonial centers in the territory, remained in place until the mid-twentieth century, testimony to the persistence of indigenous sacred memory even within a Catholic frame.

In 1572, Augustinian evangelists began building their church directly over this huaca—the standard colonial practice of sacred replacement. The adobe church was completed by 1587. The decades of the 1750s brought the baroque altarpiece that remains the sanctuary's glory, covered in gold leaf. Between 1955 and 1968, another tower was added.

Then came the catastrophic earthquakes of the 1970s. The church suffered severe damage. Into this devastation came Father Ugo de Censi, an Italian Salesian priest whose vision extended beyond mere reconstruction. Working with Operation Mato Grosso and establishing the Don Bosco wood-carving cooperative, he created a movement that rebuilt the sanctuary while teaching young people the craft traditions that would sustain the community.

The renaissance-style church visible today was completed in the 1980s. The sanctuary received Historical Heritage designation in 1941 and was formally consecrated as a Sanctuary in 2005, with the Virgin of the Assumption elevated to patron of the Diocese of Huari.