Tamanowas Rock is said to have first been used 10,000 years ago by the Chimakum ( or Chemacum ) people ( who no longer exist ) , leading to its alternate name " Chimacum Rock " , whose name is also found in other local geographic features . In accordance with legend , it may have been used as a refuge from the tsunami caused by the 1700 Cascadia earthquake , and earlier as a lookout for hunting now-extinct mastodon . " Tamanowas " means " spirit power " in the Klallam language
1700 Cascadia earthquake
1700 Cascadia earthquake
Tamanowas Rock