Archaeological area of Barranco de Balos

The archaeological area of Barranco de Balos ranks among the most significant collections of rock art in the Canary Islands, straddling the border between the municipalities of Agüimes and Santa Lucía de Tirajana on Gran Canaria. Known locally as Los Letreros, the site occupies a basaltic massif of volcanic origin stretching more than 600 metres along the upper course of the Barranco de Balos ravine, at roughly 200 metres above sea level.

What can visitors see at the site?

The rock faces of the ravine are covered with numerous petroglyphs, carved mainly using the pecking technique, with scraping and incision appearing less frequently. The compositions include nearly every type of motif documented in Canarian rock art: anthropomorphic figures showing simplified human forms, zoomorphic images of animals, and geometric and alphabet-like signs. This variety makes Barranco de Balos one of the richest petroglyph collections on Gran Canaria, gathering practically the full range of techniques and motifs known across the archipelago in a single location.

What role did the site play for the island's original inhabitants?

Researchers believe the ravine may have served as a sacred site for the indigenous population of Gran Canaria before the Spanish conquest. Recurring geometric patterns and schematic, line-based human figures point to a symbolic rather than purely decorative purpose behind the carvings. The scale and complexity of the compositions suggest the location was visited and used over an extended period, making it a valuable source of insight into the beliefs and practices of the island's pre-Hispanic population.

Why is the site protected?

Given its exceptional cultural and scientific heritage value, the site was declared a Bien de Interés Cultural (Cultural Heritage Asset) back in 1973, one of the earliest such designations in the Canary Islands. This protected status reflects the importance of Barranco de Balos as evidence of the archipelago's pre-colonial history and requires safeguarding the rock surfaces against erosion, vandalism and unauthorised interference.

Where exactly is it located?

The site lies within two neighbouring municipalities in southeastern Gran Canaria, Agüimes and Santa Lucía de Tirajana, along the upper stretch of the Barranco de Balos ravine. Its approximate coordinates are 27.872°N, 15.478°W. The surrounding landscape has the rugged, volcanic character typical of the island's interior, with visible basalt layers forming the natural rock surfaces on which the carvings were made.

Frequently asked questions

Is the petroglyph site easy to reach? The area lies in fairly rugged mountain-ravine terrain, so visiting requires a hike and suitable preparation rather than direct vehicle access.

How old are the petroglyphs? Precise dating remains a subject of ongoing archaeological research, though the carvings are linked to the period when the island was inhabited by its indigenous population before the Spanish conquest.

Is the site still being studied today? Yes, it continues to attract scientific analysis, including work using digital image processing to detect and document overlapping engravings, helping researchers better understand the chronology in which the different motifs were created.

What sets this site apart from other petroglyph locations on Gran Canaria? Its scale, a rock massif over 600 metres long, and the sheer diversity of techniques and motifs concentrated in one place make it a key reference point for the study of rock art across the wider Canarian archipelago.