Answer: AGESAGO

AnswerCrossword Clue
AGESAGOFar, far back
AGESAGOA very long time back
AGESAGOWay back in time
AGESAGOBefore any of us can remember, perhaps
AGESAGOIn olden times
AGESAGOA long time past
AGESAGOWay in the past
AGESAGOLong in the past
AGESAGOQuite a while back
AGESAGOBack in the day
AGESAGOFar back
AGESAGOWay back when
AGESAGOOnce upon a time
AGESAGOWay, way back
AGESAGOBack when
AGESAGOWay back
AGESAGOA good while back
AGESAGOIn olden days
AGESAGOWhen dinosaurs roamed
AGESAGOIn the very old days
AGESAGOIn the distant past
AGESAGOIn days of yore