The Stone Age owes its name to tools that survived to our time. The material early humans worked with most, though, was probably wood because it is so much easier to process. Unfortunately, we know very little about Paleolithic woodwork because wood rots relatively quickly. But at Abric Romaní, a rock shelter in Capellades, west of Barcelona, mineral-rich water coated wooden Neanderthal tools in a limestone-like crust. When wood rotted away, it left behind hollow molds that faithfully reflect its shape.

In a recent Science Advances study, a team of Spanish archaeologists has cataloged 597 wooden remains from Neanderthal living areas dating from 62,000 to 40,000 years ago. They found spears, digging sticks, bark trays, parts of shelters, and a club unlike anything seen before, suggesting Neanderthals were likely much more than just Homo sapiens’ dumber cousins.

Beyond hunting gear

The oldest wooden artifacts we have are mostly weapons. They include spears from a German town called Schöningen, a spear tip from Clacton-on-Sea in England, and the spear found alongside an elephant skeleton in Lehringen, Germany. Most came from waterlogged sediments, where a lack of oxygen slowed decay.

The spears mostly give us information about how Neanderthals hunted. The findings at Abric Romaní are different because the finds come from a place where Neanderthals lived, slept, cooked, and made tools over the course of some 20,000 years.

“We have a sample of wooden tools for different subsistence activities, not only hunting,” says M. Gema Chacón, an archaeologist at the Catalan Institute of Human Paleoecology and Social Evolution (IPHES-CERCA) and co-author of the study. Because wood turns up in level after level, it shows that woodworking was routine for Neanderthals rather than an occasional one-off.