Kawasaki Water Pipeline -Nakai Monitoring Post@Machida City Tokyo / 東京都町田市 川崎水道 中井 観測孔

川崎水道 第一導水隧道 監視孔

This place is certainly Tokyo but, Kanagawa Prefecture’s Kawasaki City department seems to be having this facility.

As of 2021, because of the road width expansion, the Monitoring post relocated to a bit back aside of the road. Unfortunately, the Building has reconstructed and that resulted bad as below.