It was a beautiful day in Equestria. A quarry opened, and all the ponies that worked there were stallions. They would collect stone, to make statues, buildings, sidewalks, and many other things.
One day, Rainbow Dash met with Celestia at her cloudhouse.
Celestia: The quarry needs a pegasus to help out for a few days. The manager, and I agreed that you would be the best option. I will find others to take over your work until you get back.
Rainbow Dash: I won't let you down. *Flies to the quarry*