It has been estimated that one in ten emigrants died during the crossing. Most of these graves were hastily-dug because few emigrants had the time to mark the graves of the deceased.
In most cases, graves were marked with little more than a simple wooden board. Nevertheless, some emigrants fashioned more elaborate markers from the materials at hand such as native rocks or, in one notable instance, a wagon rim. A number of these emigrant graves can still be found along the trails and through the dedicated research of some OCTA volunteers, the history of the deceased has been reconstructed.