Location: Sikhote-Alin, Maritime Territory, former USSR Nickel-Iron Meteorite, Coarsest Octahedrite (pronounced "shikota-aleen") These meteorites are from a rare actual witnessed fall. On February 12, 1947 people in eastern Siberia witnessed the largest single meteorite fall. Over 23 tons of material showered the area. This meteorite displays regmaglypts, thumbprint-like depressions, and has ragged, twisted and distorted surfaces. This occurred because the meteorite broke up at a rather low altitude and was not subjected to the intense ablation that would have smoothed its surface.