Many moons ago
Definition 1 of 1
Pro Tip 1/3Time Expression
Used to emphasize that something happened a very long time ago. 
She moved to this town many moons ago, well before the new highway was built.
Pro Tip 2/3Poetic Flavor
The phrase adds a poetic touch to the language, suggesting a connection with nature. 
Many moons ago, our ancestors roamed these lands, living in harmony with the earth.
Pro Tip 3/3Emotional Weight
Can convey a sense of nostalgia or reverence for the past. 
Many moons ago, we shared our first kiss under the starry sky.