It was the coldest time in the Ice Age, which started a million years ago.The average temperature was assumed to be six to seven degrees lower than that of today.Snow on the mountains didnвЂ™t melt even in summer.The sea level was 100 meters lower than the present sea level, connecting the Japanese archipelago to the Asian Continent.Large-sized animals such as Naumann elephants and bighorn deer inhabited the main island of Japan, surviving the cold climate.People moved around to hunt for them. It is considered that people began to live in Isehara about 28,000 years ago, though Japan is said to have a history of approximately 50,000 years.Once the history of Isehara was believed to be 18,000 years when knife-shaped tools made of stone were excavated from the Kaminozaike site in Osumidai.However, stoneware was found recently in the 28,000-year-old strata of the Uenodai site (the grounds of Tokai University Hospital in Shimo-Kasuya) and it is considered the oldest artifact of Isehara so far.

Shimo docs