For those who do not have the opportunity to visit the world's largest cave - 'Son Doong', this is a book that brings a wealth of experience to the challenges of nature. The book is written about Son Doong experience by Van Anh - a well known activist about gender, women, children in Vietnam. Throughout the trip, Van Anh cherished her childhood memories, memories of mother and family until she grew up, joining in the precious experience trip to Son Doong. Through which she draws many values for herself: the beauty of Vietnam should be protected and preserved; Family is an important factor influencing the personality of people. For women, she sends a message, do not depend on men, believe in strength of yourself, do not wait!