Rachel offers to take Harry with them as they see her former mother-in-law, Ruth, who lives near a lake at the base of the volcano. While exploring, they find dead trees, dead squirrels, and even a young couple boiled to death in a hot spring heated by the volcano's magma. Paul arrives with a USGS team that evening, and they set up a base to monitor the volcano. Harry believes the disturbances to be signs of an impending eruption, but Paul disagrees and advises against giving a false alarm. Still, Harry tries to convince Rachel to prepare for a disaster, while developing a relationship with her and the children.
