Tides' Hollow is a damp cave occupied by the Wrathscale naga who also occupy the nearby Wrathscale Point ruins. The interior is filled with ruined night elf relics and columns, which suggests that a night elf settlement was once located here.
According to Priestess Kyleen Il'dinare at Odesyus' Landing, Tides' Hollow and the surrounding ruins were once part of a night elven city. It is unknown why the night elves departed, but the naga eventually took over the ruins and cave system.