One of the most studied subjects in the Olba region is the graves. Nevertheless, new grave forms emerge with each new study conducted there, and old studies are re-evaluated based on recent findings. In some rare cases, results accepted up to now may change. This study addresses such a possibility in terms of burial customs. In this study, tombs, also referred to here as monuments, are considered. Examples of new forms of tomb monuments that were previously unknown, or only a few of which were published before, are presented. The features of these monuments are used to introduce new and strong evidence with regards to the chronology. One of the most important results is the discovery of evidence for the practice of cremation, accepted as a rare occurrence during the antique period. Based on this, a shift in the process of burial customs during the Roman period, especially for the temple tombs, is suggested as a new dating criterion.