Bow drills were used in Mehrgarh between the 4th and 5th millennium BC. This bow drill--used to drill holes into lapis lazuli and carnelian--was made of green jasper.
Bow drills were used in Mehrgarh between the 4th and 5th millennium BC. They were used to make friction fire. The homo erectus used it back then This bow drill--used to drill holes into lapis lazuli and carnelian--was made of green jasper.