An exceptional palaeontological site going back 100,000 years is unearthed in Arrasate

An important site containing at least 40 species reflecting fauna during the Upper Pleistocenewas discovered in 2012 by quarry workers after carrying out a blasting operation. When they spotted the presence of a great many fossil remains in the clay that filled the cave, they halted the works. After confirming the importance of the site, researchers decided in 2013 to carry out an emergency excavation to retrieve the bone remains.
Paleontology News — ScienceDaily