Helmets using ivory from boar's tusks were known in the Mycenaean world from the 17th century BC (Shaft Graves, Mycenae) to the 10th century BC (Elateia, Central Greece). The helmet was made through the use of slivers of boar tusks which were attached to a leather base, padded with felt, in rows. A description of a boar's tusk helmet appears in book ten of Homer's Iliad, as Odysseus is armed for a night raid to be conducted against the Trojans.