Höhlenkinder – Im Heimlichen Grund

Höhlenkinder – Im Heimlichen Grund is the first book in a trilogy by Alois Theodor Sonnleitner, published in the early 20th century. It follows orphans Eva and Peter as they are isolated in a remote mountain valley and learn to survive like primitive humans. Through their experiences, Sonnleitner illustrates the development of humanity from the Stone Age to the Iron Age, making it a unique blend of adventure and educational narrative for young readers. The book emphasizes the importance of fire, food gathering, and the creation of tools and clothing.