Shogo Kasai is a cool 14-year old boy living in Yamanashi Prefecture. He’s cool because he’s really into archaeology, so much so that he dug a pit in his backyard and made a semi-subterranean straw house that resembled Jomon period architecture. He consulted archaeology books and museum officials and built it out of bamboo and rice straw. Then, in October, he gave up the comfort of his bedroom for a night and spent it in his hut, even cooking himself a eal of shiitake soup—a Jomon period dish—on a charcoal fire. His next step? To make some Jomon period clothes and actually start living in there, at least for several weeks at a time.