Cerro El Diablo (Piura) — unconfirmed

The supplied research notes show multiple distinct geographic features bearing the element 'Diablo' in their names (for example, a Cerro del Diablo in Ponce, Puerto Rico; a Wikidata item for a Cerro El Diablo in Chile; and Muela del Diablo / Cerro Pachajalla in La Paz, Bolivia). None of the provided sources identify or document a Cerro El Diablo located in Piura, Peru. The materials include an oral-traditional account that links a named hill to 'el Diablo' in a Mexican Nahua community, illustrating a broader folkloric pattern in which hills are associated with the Devil and serve cultural or moral functions in local narratives. Administrative and conservation records in the provided materials show that some 'Diablo'-named landforms (e.g., Muela del Diablo / Cerro Pachajalla) have been recognized as landscape heritage in other countries. However, no historical timeline, ownership, accessibility information, or site-specific cultural-historical significance for a Cerro El Diablo in Piura is present in the supplied sources. Because the dataset contains references to multiple different places with similar names, any specific claims tying a Piura site to these other entries cannot be supported from the available material. The research recommendation in the sources is to consult Peruvian geographic databases, Piura municipal records, local toponymic lists, and Piura-region folklore collections to verify whether a hill called 'Cerro El Diablo' exists in Piura and to gather any associated cultural or paranormal reports.