About 150 tools were excavated in Kenya. They include sharp flakes of stone used for cutting, hammers and heavy rocks that most likely served as anvils.
Every single movement that your skeleton makes uses the very same principle — whether you're hammering on on anvil or lifting your pinky to sip a cup of tea.
Ron passed the bag to Griphook, and the goblin pulled out a number of small metal instruments that when shaken made a long ringing noise like miniature hammers on anvils.
Meantime, now the stranger was still beseeching his poor boon of Ahab; and Ahab still stood like an anvil, receiving every shock, but without the least quivering of his own.
Storms that were strong enough to make these features--called above anvil cirrus plumes, or AACPs-- were also more likely to have severe tornadoes, large hail, and high winds.