The 357,000-year-old abrader found in the Lower Paleolithic layers of Tabun Cave in Israel is presently the earliest documented artifact of its kind. The 357,000-year-old abrading tool from Tabun Cave, Mount Carmel, Israel, viewed from various angles. Image credit: Shimelmitz et al., doi: 10.1016/j.jhevol.2020.102909. The abrading tool from Tabun Cave is an ovate dolomite cobble measuring 9.4 x 8.8 x 6 cm (3.7 x 3.5 x 2.4 inches) and weighing almost...