Rock art near the Strait of Gibraltar is offering new insight into how humans expressed ideas, beliefs, and identity across tens of thousands of years. A new study led by Guadalupe Monge shows that open-air paintings and engravings in southern Spain form one of the longest and most complex symbolic records in Europe. The research was published in Quaternary.
Rock art includes drawings, paintings, and engravings made on natural stone surfaces. Some of the earliest examples date back more than 64,000 years. Researchers see these images as direct evidence of symbolic behavior, long before writing existed.
Southern Iberia stands out due to its density of sites and the unusually long time span they cover, from early prehistory to the historic periods.
Rock art near the Strait of Gibraltar reveals deep human roots
The study focuses on Cádiz Province in southern Spain, located at the meeting point of the Atlantic Ocean and the Mediterranean Sea. The area includes Campo de Gibraltar and La Janda. Its geology played a decisive role. Layers of sandstone and clay eroded unevenly over time, creating shallow rock shelters exposed to the open air. Wind, salt, and moisture shaped these cavities and made them ideal surfaces for art.
Unlike famous cave paintings in northern Spain or France, most of the art here appears outdoors. Researchers say this challenges the idea that early symbolic expression was confined to deep caves. In this region, open landscapes also served as places for ritual, memory, and communication.
A landscape shaped by geology and erosion
The first discoveries in Cádiz date to the early 20th century. In 1914, French scholar Abbé Henri Breuil documented dozens of rock art shelters, including the well-known Tajo de las Figuras. One site, Cueva de las Palomas, attracted attention because it suggested Paleolithic painting in an open-air shelter, something considered rare at the time.
After this early burst of interest, research slowed for decades. Attention returned in the late 1970s with the study of Laja Alta, a shelter famous for its painted boats. These images are unique in the Mediterranean region. While earlier researchers linked them to the Bronze Age, later work suggests the site was used much earlier, during the late Neolithic and Copper Age. The debate remains active.
Early discoveries laid the groundwork for a hidden heritage
From the 1980s onward, systematic surveys expanded the record. By the early 2000s, researchers and local heritage groups had identified more than 200 sites. Recent studies now place the number above 300. This makes the region one of the densest open-air rock art landscapes in the world.
Boat paintings and renewed scientific debate
One of the study’s most significant findings concerns North Africa. Similar rock shelters and paintings appear on the Moroccan side of the Strait, especially near Tangier. The geology is nearly identical, and many motifs and pigments closely match those in southern Spain.
Researchers argue that these sites form a single cultural phenomenon that crossed the Strait during prehistory. If confirmed, this would represent the world’s only known intercontinental rock art tradition. The finding supports the idea of repeated contact, shared practices, or parallel cultural development on both sides of the strait.
An art tradition that crossed continents
Among the oldest images are hand stencils. Artists placed a hand on the rock and blew pigment around it, leaving a negative outline. Several such hands have been documented at sites such as Cueva de las Estrellas and Cueva de las Palomas. Some appear to show missing finger bones, a feature seen at other European sites.
These hands may date back to Neanderthal times. Nearby caves in Gibraltar preserve evidence of late Neanderthal occupation. Researchers say this raises the possibility that some of the earliest symbols in the region were created before modern humans arrived.
Hand stencils offer clues to the earliest artists
Later periods added animals, birds, dots, boats, human figures, and abstract signs. Over thousands of years, different styles overlapped in the same shelters. This turned the rock walls into layered records of cultural change.
Despite its importance, much of this heritage remains poorly protected. Climate change has intensified erosion, especially as native oak forests that once shielded the shelters have declined due to disease and drought. Wind and salt now strike exposed rock faces more directly.
Only a small number of sites have physical protection or controlled access. Researchers warn that without urgent conservation measures, many paintings could disappear within decades.
Climate change and neglect threaten fragile sites
The study calls for stronger research, landscape protection, and long-term management. One proposal suggests designating the region as a UNESCO Global Geopark to integrate geological, cultural, and natural heritage.
As research continues, the rock art of southern Iberia near the Strait of Gibraltar is emerging as a rare archive of human creativity, preserved in stone at one of the world’s most important prehistoric crossroads.
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