Description

Known as the "La Huella del Pajarillo" incident.

Mainpoints:

* The massive burn mark (120×70 meters) showed grass burned from top to bottom, opposite to normal fire behavior, with stones blackened only on top suggesting heat came from above.
* Animals and insects inside the mark were found desiccated but perfectly preserved, as if their internal fluids had been instantly extracted while their external features remained intact.
* During a forest fire 1.5 years later, the flames completely avoided the original burn area, creating a "negative image" that remained untouched while surrounding vegetation burned.
* A nearby willow tree lost all chlorophyll within 48 hours yet bloomed abnormally, and biological samples showed impossible preservation states.
* The site exhibited electromagnetic properties that interfered with wireless equipment decades later, suggesting residual energy remained.
* Wildlife continues to avoid the area completely, with cattle refusing to graze on the grass that regrew within the mark despite appearing normal.

The incident occurred on January 9, 1986, in the Sierra del Pajarillo near Capilla del Monte, Córdoba, Argentina. The case began when the Gómez family; grandmother Esperanza Pelliza, her sister Sara, and 12-year-old grandson Gabriel who witnessed an intense red light penetrating their home along with a a motor-like sound and a circular object with a red central light and white tube-like structures hovering near their property. The following day, they discovered a massive elliptical burn mark measuring approximately 120 by 70 meters on the hillside. Physical evidence defied conventional explanation. The grass was burned from top to bottom (not bottom-up like normal fires). Stones were also blackened only on their upper surfaces, and small animals were found desiccated but intact, as if their internal fluids had been instantly extracted.

A nearby willow tree lost all chlorophyll within 48 hours yet bloomed abnormally. 1.5 years later during a forest fire in August 1987, the flames circumvented the original mark, creating a "negative image" that intensified its mystery. Soil analysis detected anomalous energy, and wireless equipment experienced interference at the site decades later. Investigation from people like Jorge Suárez, then Secretary of Government, brought official credibility and later founded the 'Centro de Informes OVNI'. Spanish researchers Juan José Benítez and Fernando Jiménez del Oso documented electromagnetic phenomena.

* https://web.archive.org/web/20230110160414/https://factorelblog.com/2…
* https://www.reddit.com/r/UFOs/comments/uiuucs/when_a_ufo_left_a_tree_…
* https://www.youtube.com/watch?v=eUDUGOvd1Ek