[filpen]

> Are ancient cities actually getting higher in altitude as old ruins get covered up?

I recently watched a TV show from a relatively old series about underground cities where they showed the underground of Istanbul. Very interesting, but I can't remember the name of the show.

From http://en.wikipedia.org/wiki/Hippodrome_of_Constantinople for instance:

"The course of the old racetrack has been indicated with paving, although the actual track is some 2 m (6.6 ft) below the present surface. The surviving monuments of the Spina (the middle barrier of the racecourse), the two obelisks and the Serpentine Column, now sit in holes in a landscaped garden."