柏原山, Mountain summit in Sumoto, Hyogo, Japan

Mount Kashiwarayama is a 568.9 m summit in Chigusa Otsu, Sumoto, on the eastern side of the Yuzuruha range in southeastern Awaji Island, Hyogo Prefecture. It is the highest point within Sumoto and the second-highest on Awaji Island, and forms one of the three Awaji mountains with Mount Yuzuruha and Mount Saki. A road runs near the top, and a steep but well-maintained trail also leads up.

Mount Kashiwarayama is one of the three Awaji mountains, together with Yuzuruhayama and Sennoyama. In 1990 the Environment Agency ranked it second in the photo-measurement category of a national starry-sky contest, a result of its dark night skies. A road and a steep but well-maintained trail reach the summit area, where Ryusui-ji temple stands on the east side.

The mountain is one of the Awaji Sanzan, the three peaks of Awaji Island, together with Yuzuruha-san and Senzan. At the summit's eastern side stands Takisuiji temple, and the Kashiwarayama forest road links Chigusa in Sumoto with Yura, passing just east of the top.

Wear sturdy hiking boots and bring enough water for the entire climb. Pick a dry day with stable weather conditions for the safest and most comfortable experience.

In 1990 the summit area placed second in a national starry-sky photo contest run by the Environment Agency, and the night sky here is still used for stargazing. The summit also holds the highest point within Sumoto city limits, at 568.9 m.