[DIY tree house project summary] Bushcraft made only with natural wood growing in the mountains

At "Mirumiru Mountain" in Mirumiru Land. This is a summary of the project to make a tree house by DIY. Please see the three-month digest from August to October. Start from the place where the top of the mountain is cultivated and the square is created. The material is made only from natural wood growing in the mountains. Bushcraft. The tools used were a chainsaw, a saw and an axe. I used twine to secure the wood. Cut a thick fallen tree and fill the hole for the base pillar and fix it. For the roof, we put bamboo bundles on top of cedar branches.