Gyilkostó / Lacu Roșu (Red Lake)

Gyilkostó (Hungarian) / Lacu Roșu (Romanian) refers to a lake and the village named for it in Harghita County, Romania, within the ethno-cultural region known as the Székely Land. The site is administered as one of four villages by the city of Gheorgheni. The supplied source material establishes the toponym, administrative affiliation, and regional cultural placement but does not provide a history of the lake's natural formation, construction dates, or specific historic incidents. The provided research notes contain no accounts, witness reports, named entities, or descriptive material relating to hauntings, apparitions, sounds, or other paranormal phenomena at Gyilkostó / Lacu Roșu. No oral-tradition narratives, interpretive theories, or investigative findings concerning supernatural activity are present in the supplied sources. As such, this entry documents the site's verified geographic and administrative identity while explicitly noting the absence of paranormal detail in the available materials.