Historically, this complex extended up to the Malvatu Oya on the east. The current location of the wall, however, shows a significant gap between the wall and the river.
This discrepancy suggests that the trajectory of the Malvatu Oya may have changed over the years, moving away from its original course near the monastery complex. Such changes in the river’s path could have been caused by natural geological processes, altering the landscape and the relationship between the river and the ancient boundary wall.
