Interpretations of the age of the Bonneville landslide have evolved as more investigators have studied it and as more modern dating techniques have become available . Early work based on dendrochronology and radiocarbon dating suggested the landslide occurred between AD 1060 and 1180 or between 1250 and 1280 . The year 1100 has often been cited as the date of the Bonneville landslide . More recent work using radiocarbon dating and lichenometry has suggested dates between 1500 and 1760 or between 1670 and 1760 . These younger radiocarbon ages permitted a possible link to the 1700 Cascadia earthquake . However , more recent investigations using radiocarbon dating and dendrochronology show the landslide occurred around 1450 , that could be associated with an earlier great earthquake that occurred in the mid-fifteenth century
1700 Cascadia earthquake
1700 Cascadia earthquake
Bridge of the Gods (land bridge)