You ask Windcaller if he has any suggestions.

Windcaller: "Well, not specifically... but for instance, if you wanted to get to the cask without leaving the house, you could have a stairway built from here to the cellar."

Moonflower: "Oooh... or we could get the cask up here. There's plenty of space!"

Windcaller: "I... don't think the three of us would be strong enough to carry it, but it could be done."