The part of the wells can be found is a complex of small pools and channels, fed by an underground river. The sluice gates regulate the flow of water into the moat and other water channels. Water can sometimes be seen bubbling up in the clear water of the wells.

Bishop Law enclose a group of three small well springs to create a new pond. On a still day this pool perfectly mirrors the cathedral.*

After heavy rain the flow of water increases, and local flooding becomes a risk. The palace gardeners can open sluices to let more water into the moat so the pool doesn’t overflow.*

*From a signboard next to the sluice gate