On 26-3-2013 11:21, Paolo Gibellini wrote:
> In ancient cities debris and backfill land where the cause of the
> gradually raising of the ground level and such situations was not so
> unusual.

That is true. However, they (re)built on the remains. We are here at the 
contemporaneous living level of the town so the streets should be 
horizontal and doors fully open to them ;-)

> In my town the old opening of the ancient Dome is at least 4 meters
> under the present entrance.

Absolutely! There may be similar examples in Gancaloon too.

Thomas

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