Ritual architecture featuring a central rectangular/square fire pit connected to the exterior by a subfloor ventilation duct (often paired with split-level floors and benches) develops in the central/north-central Andean highlands—what archaeologists commonly call the Mito Tradition (also linked to “Kotosh” in some literature).
At La Galgada (Áncash), Mito-tradition ceremonial chambers with a ventilated central hearth are radiocarbon-dated to around 2300 BCE, illustrating the wider spread of this temple design beyond Kotosh itself.
Huaricoto (Callejón de Huaylas, Áncash) becomes one of the highland ceremonial sites associated with the Mito tradition, with activity spanning from the Late Preceramic into later periods—showing the durability of the temple pattern over many centuries.
Mid-20th-century Japanese archaeological work at Kotosh exposed the site’s deep stratigraphy and brought the Temple of the Crossed Hands to broader scholarly attention, helping define Kotosh as a key reference point for highland preceramic/Initial Period ritual architecture.
At Kotosh (near modern Huánuco), the earliest temple architecture—characterized by interior niches and decorative mud-plaster features—dates to the end of the Late Preceramic (c. 2000–1800 BCE), establishing Kotosh as a key type-site for highland ritual architecture.
During Kotosh’s early preceramic phase (often associated with the Mito tradition), the Temple of the Crossed Hands is constructed, notable for its interior layout and the iconic crossed-forearms relief motif that gives the building its name.
After the preceramic levels, Kotosh’s sequence includes an Initial Period component marked by Wairajirca pottery and new/overlying temple construction—evidence for changing ritual practice alongside the adoption of ceramics.
Wairajirca ceramics—often described as polished brown/black wares with incisions and post-firing paint—spread in the northern/central highlands during the later second millennium BCE, forming a key ceramic horizon within the broader Kotosh-related sequence.
At Kotosh, stratigraphy shows a Kotosh period level that maintains many Wairajirca traditions and lies directly beneath Chavín materials, documenting continuity and then transition toward Early Horizon religious and material culture.
By roughly the early first millennium BCE, many highland ritual centers with Kotosh/Mito-style architectural traditions show increasing overlap with, and eventual replacement by, Chavín-associated materials and religious architecture.
A 1963 field season led by Seiichi Izumi is described as fully clearing the Temple of the Crossed Hands and reinforcing its preceramic attribution (notably by the absence of pottery in its construction/occupation level).
Modern syntheses describe Kotosh as a major early temple site near Huánuco, with its earliest buildings dating to the Late Preceramic and later superimposed Initial Period and Chavín components—making it central for interpreting long-term religious architecture sequences in the Andean highlands.
Kotosh religious tradition and temple architecture (Central Highlands, c. 1800–900 BCE)
