Bottom
Under a canopy your clan digs in the ground, trying to get to the bottom. They want to build a nice home your entire clan can live in, but they need to get to the bottom before they'll start building.
Picture all of the people in your clan under this canopy digging with all their might, trying to find the bottom. "Isn't there... no bottom though?" you think to yourself.
てい
そこ
None
Suddenly someone down in the hole shouts that they've reached the bottom, but it's full of water and they're all soaked (そこ)!
The bottom is full of water, and everyone and everything down there is soaked through now.