The presence of extensive sickle sheen on microblades found at Natufian sites is evidence there for the:

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The presence of sickle sheen on microblades is indicative of their use in harvesting cereal grains. Sickle sheen is a type of polish that forms on the edge of stone tools as a result of cutting plant material, specifically cereal grains, which suggests these tools were used in agricultural practices rather than for hunting, making bone tools, or directly in the domestication of plants.

The Presence of Extensive Sickle Sheen on Microblades Found at Natufian