Hello Randy,
Thanks for the link.
Just one thing i noted: There's only one declared archeological site at Polonnaruwa?? thought this was strange Huh Plus most of the monuments mentioned are those of religious significance. Very little archeological sites of socio economic nature are mentioned. Next to nothing about ancient dwellings, etc.
The truth that I have not even had a 'good' look at the list. Didn't have time.

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Best Regards,
Priyanjan.