La Soufrière captures a poignant reunion between a father and son after 25 years apart. Swedish photographer Kristian Krän travels to the island of Guadeloupe in the Caribbean to meet his father, Arthur — a meeting that turns out to be both their first and their last. Arthur had left the family when Kristian was just two years old. It was only years later that Kristian learned of his father's existence and his longstanding mental illness. To meet Arthur and gain understanding, Kristian journeys to Basse-Terre, the capital of Guadeloupe, a quiet town with a shrinking population. Over the course of a week, they explore the island together. Communication is difficult, as Kristian's understanding of Guadeloupean Creole French is limited. Instead, they spend much of their time bonding through music. Kristian's camera becomes an essential bridge between them, serving as both a means of connection and a source of comfort. One day, they hiked to the top of the volcano La Grande Soufrière, a place that inspired the book's title.