A series of sewage pipes and support structures underneath the City of Tears. At the east end is a lift shaft to the City that has been destroyed. Near the northeast end is a shaft connecting to Eternal Emilitia's room in the City of Tears.
Defender's Crest requires defeating Dung Defender | Flukenest requires defeating Flukemarm | ||
Mask Shard x 1
| Grub x 2
| ||
Whispering Root x 1 near Ancient Basin: 35 Essence | Wanderer's Journal x 1 in the room connecting to Ancient Basin | ||
King's Idol x 1 requires defeating Dung Defender and using Desolate Dive on the floor beneath the giant valve | Geo Deposit x 10
| ||
Soul Totem x 4
| Rancid Egg x 4 |
Sub-area: Isma's Grove
A hidden garden accessible by using Crystal Heart to dash through a tunnel of spikes at the east end of the Waterways after defeating the Dung Defender, or through a tunnel connected to the Kingdom's Edge. The Grove houses the presumably deceased Isma, on whose corpse the Knight finds Isma's Tear, which allows the Knight to swim through acid.
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Isma's Tear
| Grub x 1
|

Sub-area: Junk Pit
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Godtuner
| Geo Deposit x 2
| ||
Geo Chest x 6
| Godhome Entrance (start of Godmaster) |
Trivia

- There is an unused key in game files labelled "Waterways_Key" which was presumably used to open Royal Waterways instead of the currently used Simple Key.