Tomas Ochoa joined a group of Arhuacos traveling the perimeter of the Sierra Nevada de Santa Marta, following their tradition of symbolically marking the boundary of their ancestral lands. The Arhuaco mamos called this demarcation the Black Line (Linea Negra).
The images depicted originate with photographs from the journey. They have been blown up to a large format by a procedure of substituting pixels for grains of gunpowder that fix themselves upon the surface as they burn. The contradiction between the bucolic, paradisiacal appearance of the landscapes and the fire with which they have been etched evokes the paradoxes that emerge when analyzing the relationship between landscapes, ecosystems, and violence.