The towers of Bologna, Asinelli and Garisenda,
are moving with every tremor. Almost a thousand years' old they display their age, leaning together, shifting slightly in response to temperature, environmenal change; but now they are being shaken over and over again and their movement has become cause for grave concern.
Staff from the Istituto nazionale di geofisica e vulcanologia are camped in the piazza Ravegnana monitoring the structures, joined by many of the citizenry. They say that after the first shock the towers changed but the alterations are still being analysed; the second quake and waves of after shocks, which continued with more than 30 tremors last night, have produced further alterations in the towers.