"Into the past" is a phrase commonly used to refer to events or situations that have already occurred and are now distant memories, permanently etched into history. However, there are several synonyms for this phrase that can add more depth and nuance to its usage. Some of these synonyms include "in the bygone era", "in days gone by", "in the olden days", "in the yesteryears", "back in time", "in ancient history", and "in days of yore". All of these phrases have a nostalgic and wistful tone and evoke a sense of longing to revisit moments and experiences that are now confined to the past.