The Dinosaur Wall of Cal Orck'o
A cement quarry in Bolivia uncovered a near-vertical wall covered with thousands of dinosaur footprints.
What was reported
In 1994, workers at a cement quarry near Sucre exposed a huge limestone wall, about 1.5 km long and up to 100 metres high, covered with more than 5,000 dinosaur footprints. Tracks of hundreds of animals cross it, some seeming to walk straight up the wall.
It's one of the largest collections of dinosaur footprints in the world.
Explanations offered
Around 68 million years ago the surface was the muddy shore of a lake, where dinosaurs walked. Later, movements of the Earth's crust tilted the layer almost upright. A park has been built beside it, though the exposed wall is slowly eroding.
- When
- Uncovered in 1994
- Where
- Sucre, Chuquisaca, Bolivia
- Witnesses
- Cement quarry workers
- Status
- Explained
Famous cases are real, widely reported events. Each file sets out what witnesses said and the explanations that have been offered, without taking a side.