According to China News, the workers made the discovery while preparing to set off explosives.

The workers were instructed to stop and contact a local museum. Local researchers believe the eggs are anywhere from 70-130 million years old based on the purple sandstone layer of earth in which the eggs were found. That would mean the eggs were laid during the Cretaceous Period, which ended in dinosaurs’ extinction.

In April 2015, workers made a similar discovery in Heyuan city in the southern Chinese province of Guangdong. A construction team found a clutch of 43 fossilized dinosaur eggs while repairing a road.