Local authorities resumed their search Tuesday for a 37-year-old man and his 6-year-old son who went missing while hiking on a mountain in Niigata Prefecture two days ago.Koya Shibuya and his son Sora have not been heard from since telling their family by mobile phone on Sunday morning that they were beginning their descent of the mountain in the central Japan prefecture, now thought to be Mt. Matsudaira. Family members reported them missing later that day, police said.According to the police, Shibuya called his father on Saturday evening to say that he and his son would sleep on the mounta…READ FULL ARTICLE