The Dolerite Cliffs
Towering columnar walls and canyon faces where cooling joints and erosion reveal the internal structure of the dolerite intrusion.
The geological story
The canyon is only one expression of a much larger landscape. The same dolerite that forms the cliffs also appears as block fields, rock towers, koppies and weathered plateau surfaces across the surrounding plains.
Beneath this landscape lies one of the great geological stories of southern Africa. During the early Jurassic, as Gondwana began to break apart, magma rose into the Karoo Basin and spread sideways underground as thick dolerite sills. When the molten rock cooled it contracted and fractured into vertical joints and cross-joints. Over millions of years erosion exploited those weaknesses, carving the canyon and exposing the internal architecture of the intrusion.
Today the same process can be read at multiple scales: in the towering cliffs, on the rocky canyon floor, in the balancing tors scattered across the plateau, and in the almost level grassland plains where antelope once moved freely long before the reserve took its modern form.
Geological timeline
Before breakup
Southern Africa lay within Gondwana, above thick Karoo sediments deposited in ancient basins.
~183 Ma
Magma intruded through the crust, feeding the Karoo Large Igneous Province and forming dolerite sills and dykes.
Long erosion
Softer rocks were removed, the dolerite was exposed, and canyon incision began along fracture systems.
Modern landscape
Cliffs, tors, plateau grasslands and wildlife plains now define the canyon environment.
Explore the four geological zones
Each zone can become its own krpano scene group or mini-tour. Together they explain the full structure of the canyon landscape from cliff edge to open plain.
The Canyon Floor
Where rockfall, seasonal water, alluvial debris and sheltered vegetation interact beneath the cliffs.
The Tors & Block Fields
Balancing rock towers, split blocks and weathered outcrops showing how the dolerite breaks apart across the plateau surface.
The Plateau Landscape
Vast open plains, koppies, scattered boulders and grassland ecosystems once dominated by springbok and now part of a wider reserve story.
Gondwana and the Origin of the Canyons
The cliffs, tors and canyon floors of Tiger Canyon belong to a much older story: the breakup of Gondwana and the volcanic events that formed the Karoo Large Igneous Province.
Stage 1
Before the Breakup
~200 million years ago
Gondwana was still intact, and southern Africa lay deep within the supercontinent above the thick sedimentary rocks of the Karoo Basin.
Tiger Canyon in the Karoo Igneous Province
Tiger Canyon lies within the region shaped by the magmatic events that accompanied the breakup of Gondwana around 183 million years ago. The dolerite cliffs and canyon landforms seen today are part of that geological legacy, later exposed and sculpted by erosion.
Wildlife and the plains
Long before the reserve and tiger sanctuary existed, the plateau supported native grassland wildlife, especially springbok. Today the landscape carries both its older ecological identity and a newer conservation story, making it possible to interpret the area not only through geology but also through the changing relationship between landscape and animals.