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23.2 MB (23.0 MB compressed)
3500 x 2312 pixels
29.7 x 19.6 cm ⏐ 11.7 x 7.7 in (300dpi)
PHILIPPE PLAILLY / SCIENCE PHOTO LIBRARY PHILIPPE PLAILLY / SCIENCE PHOTO LIBRARY
Stone Age chopper tool. Close-up of an archaeologist reassembling a Stone Age tool called a 'chopper'. This is a crude stone tool defined as a pebble with an irregular cutting edge formed through the removal of flakes from one side. This specimen was discovered at the Lokalalei site in Kenya. It is a pre-Oldowan stone tool and dates from around 2.34 million years ago. Here, it is being studied by French prehistoric archaeologist Helene Roche.
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