Lucas stares at the spot the Gnoll disappeared from and asks in a worried, confused tone, "So....is he dead or?"

"Hardly." Professor Skant replies. "Tekeli-li has not survived so long because he is foolish."

"Awwwww, man!  Shrek wanted smash bat man!" Shrek whines.

Shrek sucks up his annoyance and starts looking at that box structure in the middle of room H8. What is it?

H8 - ARCANE EYE ACTIVATOR

A flat, slightly canted slab of stone rests in the center of this twenty-foot-high cave. One side is rough, as if the slab had been torn from a larger structure. The slab is eight feet long, four feet wide, four feet high, and covered with frost. Scraping off the frost on the slab reveals Draconic script etched into its top, with an open eye carved above it.

“Take the free, self-guided tour of Ythryn. Press the eye to cast the spell.” Professor Skant suggests. "If you want."

Stupid Shrek asks “Anyone know these words?” while fiddling around with the draconic text and eye. 

Lucas steps up and states plainly, "I do, Master made sure to instill the Dragon's tongue as well as the primordial one in his lessons." Lucas would then read the text aloud for the party to hear.

"All will be one in the eternal freeze of the Frostmaiden." 

Lucas pauses after reading that out loud, "....well I'm not entirely sure what we were expecting, but at the same time.....huh." Lucas is equal parts surprised and used to this kind of stuff ever since he stepped up into the artic with this group.

What's the play guys. Or do I murder you all now.

"We need to retreat from this cave so that we can rest without worrying about that creature interrupting us. Leaving this cave will expose him to the sun and get him away from his coffin, which is why I don't believe that he'll follow us if we leave, or at the very least, not too far."

Kaz nods, “understood, let us go for now.”

Percival leads the party out of the cave and tries to put some distance between them so they can rest.

Lucas will offer to take watch for 4 hours, seeing as how the last time they all opted to rest, left them nearly vulnerable to attack. 

Much to your horror, the entrance has been completely sealed, frozen shut, once more. You're not sure how or why. 

"Oh, my." Professor Skant moans. "This is not good."

“I just wanna go to sleep,” Kai weeps, trying to shoot a fire bolt at the frozen over entrance. “Pleeeeease.”

Vetis watches the frozen wall with an unreadable expression, pulling her hood a little farther forward. "That doesn't seem to be in the cards right now."

Shrek takes the time, while everyone else is distracted, to shovel up a ton of ice and snow and make an igloo.  Long rest time!

Something is magically sealing the door, causing the ice at the entrance not to melt. As Shrek begins to build an igloo, you hear an otherworldly cackle - a laugh, a terrible sound, from above. DC15 WIS save from everyone please. Anyone who fails is frightened.

Wis save: 13