The excavations at Blombos Cave have yielded important new information on the behavioural evolution of anatomically modern humans. The archaeological record from this cave site has been central in the ongoing debate on the cognitive and cultural origin of early humans and to the current understanding of when and where key behavioural innovations emerged among Homo sapiens in southern Africa during the Late Pleistocene. The most informative archaeological material from Blombos Cave includes engraved ochre ,   engraved bone  ochre processing kits,  marine shell beads ,    refined bone and stone tools      and a broad range of terrestrial and marine faunal remains, including shellfish, birds, tortoise and ostrich egg shell and mammals of various sizes. On 29 May Heritage Western Cape formally protected the site as a provincial heritage site. Cross-hatching done in ochre on a stone fragment found at Blombos Cave is believed to be the earliest known drawing done by a human in the world.