"What reasons?" Z asks suspiciously. "We're not going to run into another sewer dwelling monstrosity, are we?", he says, not having very fond memories of the dangerous crawler they met earlier.

"NO! Definitely not! I keep my tunnel free of monsters of any kind."

He gives a nervous laugh.

"Wouldn't be much use for smuggling otherwise."

Still in the distance but getting much closer are the noises of goblin squads closing in.

"Hurry! Help me get this door sealed closed again."

Petcan tries to help, but his stick figure arms aren't meant for brute strength

Randall:

randall helps get the concealing wall in place and says, “Now, let us move quickly to the pump room.”

Tempe helps with the entrance. Then follows.

While not physically strong, Z helps as much as he can - either with his hands or using telekinesis. Once they are done, he tries to hurry the party on:

"Quickly now, to the pumping station without further delay. There seem to be countless Goblins in the tunnels already. Make haste!"

There is a rumbling sound and some dirt and small rocks fall as you swing the false wall back in place. It stops 2 inches shy of closing and won't budge. Mignon kicks at it and swears under his breath. "Dammit!" He tries again and then suggests, "There's no time! Let's just hurry onward! It should be close enough for them not to notice in their haste."

Given they can't close it fully and hide it, before leaving Z quickly checks if there is anything he could use to wedge it shut from the inside to at least delay any pursuit. (I'm thinking some debris in wedge shape, or maybe a beam or pole or something he could use to prop it closed)

There are no beams or poles nearby... you could go deeper into the smuggler's tunnel to look for some?

There are a few small rocks... but they're small, and more of a rounded shape than a wedge shape?

There are also a few pieces of debris... but they are currently unrecognizable as to what shape, or even what they are as they are partially covered in gunk?

And you each have whatever equipment you started with... (whatever that is, I didn't look to see what packs and what else you started with?)

(Each or any of you can post what you want to do to try and wedge the door shut and delay any goblin pursuit.)

Petcan has a crowbar, hammer, and pitons. He looks at the others. "It'll be loud...?"

Randall:

“Unless someone has some simple illusory magic to make the wall appear unbroken from the other side, we should just get moving,” suggests Randall.

"Let's go, indeed. Pumping station is more important.

Quote from Secretfool >>

"Let's go, indeed. Pumping station is more important.

 "I agree, let's go. Once this place is flooded it won't make much of a difference how well we closed the door"

You hurry down the tunnel and Mignon informs you that the branch off to the West that leads to the pumping station is just ahead. You hear some goblins have found the door and are prying it open and beginning to fill into the smuggler's tunnel. Even more can be heard further away but approaching.

"Mignon, what way are there to escape from the pumping station to escape once we have started the flooding?"

(I.e. do we need to secure this smuggler's tunnel or can we just carry on running to the pumping station?)

"I don't know, I've never explored the pumping station. The tunnel is new."

Mignon hurries to the branch off and shows you, it is more freshly dug than the tunnel you're in.

Goblins can be heard in the distance making their way in this direction.

"Nevermind. Let us simply hurry to the pumping station and get to work. I am sure fate will provide"

Zenodor's recent years have been devoted to following his Patron's unfathomable directions, and via a sailing ship and an island they have led him here. By now he's quite used to there being no apparent plan, but trusts that his Patron won't send him into suicide until Z has fulfilled his purpose and repaid his Patron - whatever that may mean in the end.

As soon as they reach the pumping station Pepin walks to it and takes a good look to figure out how to flood the sewers. As he tells the guards to let the others know it will happen soon through the sending stone.

Mignon leads the way down the West passage and you all follow him into the pumping station. There are 3 large pipes emerging from the wall 40 feet opposite you and the pumping station room is 80 feet wide. Each of the pipes is 15 feet in diameter. The pipes are all currently closed and next to each one is a metal crank for opening each one. To flood the sewers you will need to open all 3 pipes.

Goblins can be heard scurrying down the West passage. (Not legions and legions, but a few squads at least.)

(Only the one tunnel in through which we came? No other exits? So, if we open all three, are we literally flushing ourselves down the toilet?

What is the ceiling like, any hint of a skylight, vent, drain cover, or similar?)