Could they just do the entire island?
What keeps them from going around the entire planet?
Following that you could go beyond that and the loop would get shorter and cover more of the planet.
Theoretically you could then securely store it inside a safe and cover 99.9999* of the Earth.
I guess nothing, as fantastical canon can always be extended and rebooted. God will not protest if they twist the spirit of the word.
Could they just do the entire island?
What keeps them from going around the entire planet?
Following that you could go beyond that and the loop would get shorter and cover more of the planet.
Theoretically you could then securely store it inside a safe and cover 99.9999* of the Earth.