On Llanguil Hill, only 8 km (5 mi.) northeast from the City of Cajamarca, are living rock excavations, appearing at a distance to be a multiple array of windows. The so-called Ventanillas (Niches) of Otuzco (2,850 meters / 9,350 feet) are actually part of an old cemetery of the Cajamarca Culture, which niches are neatly arranged in rows.

Apparently, this was an important place for honoring ancestors, which remains may have been removed form their original tombs to be deposited in this necropolis. Archaeologists have been able to identify two types of niches: the simple type, for the majority, and the multiple type, comprised of a corridor flanked by lateral niches.