[Machine Translation] The "Amagaeru Ryokusha" series is very popular among children and is also included in Japanese language textbooks. In this tour, we will explore the ground below. The group of tree frogs will wear vinegar-soaked cotton on their heads for some reason, get on a vehicle made by Dr. Mole, and let's go! They will visit a nest of black carp ants, encounter voles and dai-koku-kogane, run into a nest of black wasps, and more... What will this tour be all about? Please enjoy the world of various creatures living in the soil. Suitable for 4 years old and up if you want to read the book to your child. Suitable for elementary school students.