What is the thin ground called that they fall through when finding the jewels?

Question

I was wondering what the thin ground was called. I'm doing an assignment for my class.

Asked by Allison L #612557 on 2/15/2017 9:47 PM

Last updated by jill d #170087 on 2/16/2017 12:03 AM

Answered by jill d #170087 on 2/16/2017 12:03 AM

I'm sorry, additional information is require for me to help you with your question. Chapter please? Type of jewels?

Journey to the Center of the Earth