“We regard its age as quite likely between 865,000 and 810,000 years ago,” said Michael Walker of Spain’s Murcia University, a lead researcher on Cueva Negra. “[Arguably] Until now hand-axes in Europe have not been recorded from before 500,000 years ago,” said Walker. Moreover, he adds, “the evidence of combustion [use of fire] is also the oldest anywhere outside Africa.” The new dating results were acquired through biochronological analysis of small-mammal teeth remains found within the Cueva Negra rockshelter, indicating they accumulated during what is technically called the Matuyama magnetochron, or between 0.99 and 0.78 Ma. Researchers do not yet know...