The constant "kara kara" sound was incessant. Under the joint control of the four frost spirits, the icy surface bizarrely cracked in all directions, revealing a pitch-dark ice cave. The patterns inside resembled layers of spirals that went deeper underground, all the way to the unseen depths of the earth. Bursts of bone-chillingly cold wind wafted from the dark cavern, causing uncontrollable shivering on people's skin.
"I have a question." Vivian addressed the frost spirits, "This cave is sloping down, right? And it's all made of ice. If we climb up, wouldn't we slide all the way down to the bottom? Is there a way to prevent us from sliding?"
"There is a way. It's not slippery inside." Pannis spoke up, "We have collaborated before. They know what to take care of when making a cave for human use. The ice surface was pre-treated, so don't worry about slipping."
