1. A high altitude colony of Nobeyama was subjected to general survey, with regard to inhabitability, by a team of medical men with Hukuda as the leader. 2. This community is situated on the eastern slope of Mt. Yatugadake at 1, 300-1, 400m. above sea-level. The colonization Occurred after the war, 4 chobu being allotted to each family. 3. Some of the families have stabilized with sufficient labour power and skill of cultivation. But others are on the limit of existence. Engel index is mostly around 801 4. Special aid and guidance as well as organization of some kind are necessary to lead high-altitude colonization to a success. With such suitable measures high-altitude areas above 1000m. throughout Japan may be made to support a proportion of the population.