El Tío

Sources present contested and overlapping accounts rather than a single fixed origin. El Tío functions within a syncretic space where pre-Hispanic underworld powers (Supay) were reinterpreted under Spanish colonial contact; some scholars and commentators argue that Spanish demonizing imagery and colonial labor regimes (mitayuq) shaped how subterranean powers were represented and invoked in mines. The figure as encountered in modern mining practice is thus an outcome of indigenous underworld conceptions, colonial-era transformations, and miners' lived risk-management practices.

In miners' practice El Tío is represented by statues and effigies placed at mine entrances and inside adits. Typical statuary is a horned, bulging-eyed 'devil' figure and is sometimes rendered goat-like; historical and popular descriptions also note eroticized or exaggerated sexual features in some portrayals. Materials and stylistic details vary with local practice and era.

Within miners' cosmology El Tío is understood to control safety and productivity in the mine: he rewards those who pay homage and punishes those who transgress taboos or fail to propitiate him. Accidents and collapses may be interpreted as his punishment or as the subterranean power 'claiming lives' to maintain the mine's vitality. He is treated as an active presence whose favor is maintained through regular offerings and communal rites.