Travel Guide For The Former Chiang Mai Lamphun Route (Chiangmai)

Operating day: Daily
Operating time: 24 Hour

This route has a connection with the history of the ancient Ping Hang River. According to a historical tale of Chiang Mai, the Ping River used to flow past the eastern side of the ancient Wiang Kumkam Town, and also flowed past the eastern side of the ancient Hariphunchai Town (present-day Lamphun).

From : http://www.tourismthailand.org