And there are several reasons why so many buildings came down. firstly, well, it is simply the size of the earthquake itself. this satellite image is of the city of kahramanmaras before the quake. this is afterwards. you can see the extent of the damage. the fact the earthquake was relatively shallow increased its impact. all of this created a degree of movement that many buildings couldn't withstand. and it wasn'tjust older buildings that succumbed. questions are being asked about the standards of turkey's newer buildings, too. the bbc has verified this picture. it's an apartment block built ...