上田石灰鉱山は滋賀県米原市（旧・坂田郡米原町）にあった鉱山。 明治時代より採掘開始。 山肌に石灰採掘場跡が見られる他、木橋を渡った先に草木に埋もれた建物跡が残る。 また醒ヶ井駅との間に専用軌道が敷設されており、築堤跡らしき道が見られる。
Ueda lime mine was a mine located in Maibara-shi, Shiga prefecture (formerly Sakata-gun, Maibara-machi). Started mining from the Meiji era. The limestone excavation trace is seen on the mountain skin, and remains of buildings buried in the vegetation remain on the way past the wood bridge. Also, a dedicated orbit is laid between Uwagai Station and a road that seems to embankment is seen.