Sparkling Material
After coming up to the walls, he was unable to resist the temptation to run his hands through the sparkly thing on the stones. He thought to himself, “What if this was gold?” He did not get to linger on this, however. After all, he saw something that ended up changing the course of his adventure!
Cold And Damp Inside
Despite the temperature outside the tunnel, it was cold and pretty damp on the inside. Christopher noticed that he was leaving indentations on the soil as he walked. Based on the look of the puddles, there must be a water source down there. This made him feel concerned because stagnant puddles in such places might mean there were dangerous gases present in the area.