The Mousterian tool tradition, dating back approximately 300,000 to 30,000 years ago, signifies a pivotal development in human technology during the Middle Palaeolithic. Its defining characteristic is the sophisticated Levallois technique, where a stone core was meticulously prepared to control the shape and size of the flakes struck from it. These pre-planned flakes were then further retouched into a diverse array of specialized tools, including various types of scrapers (for hide processing), points (likely for spears), and denticulates (for cutting or sawing). This marks a progression towards more efficient and purpose-specific tools compared to earlier traditions.

Mousterian culture, therefore, reflects a more advanced and complex adaptation. Beyond just tools, evidence suggests the widespread and controlled use of fire for cooking, warmth, and protection. The makers lived in both caves and open-air sites, and some archaeological findings hint at the construction of rudimentary shelters. There is debated but significant evidence of intentional burial practices, sometimes including grave goods, which prompts discussions about early symbolic thought, belief systems, or an understanding of death. They were capable hunters, often tackling large game, implying social cooperation.

The primary makers of the Mousterian tradition were the Neanderthals (Homo neanderthalensis), populating Europe and parts of Western Asia. Interestingly, early anatomically modern humans (Homo sapiens) also produced and utilized Mousterian tools in certain regions, particularly in the Middle East, during periods when both hominin groups coexisted. This shared technology indicates a certain level of cultural exchange or parallel innovation.