SOCIETY × SUBSISTENCE

Grass Beds and Swept Ashes

~200,000 years ago

Palaeolithic · Middle Stone Age · MIS 7

Near the back of Border Cave, in the Lebombo Mountains of South Africa, people spread sheaves of broad-leafed grass over layers of ash at least 200,000 years ago: bedding, for sleeping and for working. The ash underneath was often the remains of older bedding, burned in place to keep the camp clean, and the discoverers suggest it may also have discouraged crawling insects. The habit lasted: the cave records beds made, used, burned and remade across more than 150,000 years.

Why it matters

A bed is not a spear point or a bead; it almost never fossilizes, which is why the deep history of comfort is nearly blank. Border Cave fills in a domestic scene: floors refreshed with fire, sleep given a place. And by 77,000 years ago at Sibudu, bedding of sedge was being topped with aromatic leaves whose chemistry kills insect larvae, plant knowledge pressed into household service.

Dating & uncertainty

The date is a floor, not a point: the oldest bedding lies in layers at least 200,000 years old, and beds were still being made in the cave more than 150,000 years later. Identifying them at all took microscopes: what survives is not grass but its silica skeletons and compacted, sometimes burned, traces.

Sources

1. Wadley et al. (2020), Science · Fire and grass-bedding construction 200 thousand years ago at Border Cave, South Africadoi:10.1126/science.abc7239
2. Wadley et al. (2011), Science · Middle Stone Age bedding construction and settlement patterns at Sibudu, South Africadoi:10.1126/science.1213317
3. Morrissey et al. (2026), Journal of Archaeological Science · New microscale insights into plant-based bedding construction and maintenance between 200 000 and 43 000 years ago at Border Cave, South Africadoi:10.1016/j.jas.2026.106592

Our species’ history as one day

08:45:4215 h 14 min before midnight

if the 315,000 years of Homo sapiens were compressed into a single day