Mud goes up to you ankles, footing will be slippery here. The doors look like they are made of stone. There is either a ramp or stairway leadin down, it is impossible to tell at this distance.

The words of the crayfish are just teasing your brain, familiar but uncertain. You catch the words, "why" and "great or big"

Those nearby would hear Glink grumbling inside his armor, something about a prototype and still working out the bugs. This is followed by muffled clattering as if some repair is occurring inside the armored suit.

”There we go!” Glink finally exclaims, “Says that again if ya don’t mind there big fella.”

(Cast Comprehend Languages)

Vodin cautiously watches as he has no comprehension of the crustacean's language. He has his bow ready should combat break out. 

(Nib jump 16; plus he's a rabbit ;-) )

Nib will move forward

Quote from Backstabitha >>

Those nearby would hear Glink grumbling inside his armor, something about a prototype and still working out the bugs. This is followed by muffled clattering as if some repair is occurring inside the armored suit.

”There we go!” Glink finally exclaims, “Says that again if ya don’t mind there big fella.”

(Cast Comprehend Languages)

 The crayfish says in an officious tone, "Behold! you are in the presence of The Grand Guardian! Who are you, and why do you disturb his slumber?"

Glink relays the info to the others, “Some sort of guardian. A bit full of himself. Wondering why we’re bothering him. Any suggestions other than just blasting him to crab cakes?” he asks, raising his gauntlet sheathed in energy.

"Explain our situation and ask for another exit as we do not plan to disturb anyone" says Vodin

“Ah, well I can’t actually speak to it,” explains Glink, “I can just sorta comprehend it. So… what do ya think, blast away?”

Quote from Backstabitha >>

“Ah, well I can’t actually speak to it,” explains Glink, “I can just sorta comprehend it. So… what do ya think, blast away?”

 OOC: You would actually be able to work some words from what the spell helped you understand. 

Glink attempts to respond using many of the same words as the creature, though his tone is obviously mocking, “Behold! you are in the presence of The Grand Party. We don’t mean to disturb you there Chum. And by Chum I don’t mean chum… ah… so where’s the exit, this way?” he finishes weakly.

((Glink has a 5 Cha score which is a -3 Cha modifier and should not be speaking to anyone other than a therapist))

The crayfish bobs its head then pauses for a second. Then bobs its head again.

It looks to the right and left and shuffles. "Welcome Grand Party of Chum! You may get out by going left or right! The stairway is clogged with mud!"

Once Glink shares what was said Vodin will head to the right alcove and opens the door. Hopefully finding a way out. 

The door opens with difficulty as the mud acts as a barrier and makes footing slippery. Beyond the door, there is a 10 foot corridor that goes for about 40-50 feet before turning left.

Vodin heads down the corridor and turns left to see what is around the corner while trying to keep an eye out for danger. 

Perception

21 - rolled in game log

Nib follows close behind to provide support

As Vodin walks her notices that moisture has eroded a conspicuous section of wall  in the middle of right side. The plaster is soaked through and a section has crumbled to the floor. It reveals a 5 foot by 5 foot square of stone.

Vodin gives the stone square a push with his quarterstaff to see if it moves

Athletics 

18 rolled in game log 

Glink also follows giving a condescending salute to the crayfish guardian as they pass. As they come to the next mystery, Glink tries to inspect the square.

Investigation + Guidance 14

It moves a small amount under Vodins efforts. Maybe if more people push?