Among the prehistoric sites in Malaysia where artefacts from the Middle Palaeolithic era have been found are Bukit Bunuh, Bukit Gua Harimau, Bukit Jawa, Bukit Kepala Gajah, and Kota Tampan in the Lenggong Archaeological Heritage Valley. Of these, Bukit Bunuh and Kota Tampan are ancient lakeside sites, the geology of Bukit Bunuh showing evidence of meteoric impact. The 10,000-year-old skeleton known as Perak Man was found inside the Bukit Gunung Runtuh cave at Bukit Kepala Gajah. </ref> Ancient tools discovered in the area of Kota Tampan, including anvils, cores, debitage, and hammerstones, provide information on the migrations of "Homo sapiens". Other important Neolithic sites in the country include Bukit Gua Harimau, Gua Badak, Gua Pondok, and Padang Rengas, containing evidence of human presence in the Mesolithic Hoabinhian era.