marabar expedition and its consequence

When they reach the caves, a distinct echo in one of them frightens Mrs. Moore, who decides she must leave immediately. The echo terrifies her, for it gives her the sense that the universe is chaotic and has no order.

Aziz and Adela continue to explore the caves, and Adela realizes that she does not love Ronny. However, she does not think that this is reason enough to break off her engagement. Adela leaves Aziz, who goes into a cave to smoke, but when he exits he finds their guide alone and asleep. Aziz searches for Adela, but only finds her broken field glasses. Finally he finds Fielding, who arrived at the cave in Miss Derek's care, but he does not know where Adela is. When the group returns to Chandrapore, Aziz is arrested for assaulting Adela.