Wat Khao Din or the "Monastery of the Mount of Earth" was located off the city island in the eastern area of Ayutthaya in Phai Ling sub-district.
The monastery was situated on the east bank of Khlong Kudi Dao, just opposite Wat Samana Kottharam. Wat Kuek stood on its south.
Its historical background and period of construction are unknown.
The denomination and location of this temple is questionable. On a 1993 Fine Arts Department (FAD) map we read Wat Khao Din (วัดเขาดิน), but on an earlier map drafted in 1974 we find Wat Khun Din (วัดขุนดิน) in the same location. It gets more complicated as a 2005 FAD map mentions a monastery called Wat Tuek (วัดตึก) more or less at the same site. On the latter map we find also a Wat Khud Din (วัดขุดดิน) further north opposite Wat Kudi Dao.
There are no visible traces remaining of this monastery at ground level. Some remains of the temple were excavated by the Fine Arts Department (FAD) in Geo Coord: +14° 20' 27.20" N, +100° 35' 15.79" E.
Text & maps by Tricky Vandenberg - February 2009 Reviewed July 2011