Mottingham 4 August 1585: The cause of the incident, referred to as a "marvellous accident" at the time, was then unknown, and it is likely that a sinkhole had developed. The area is well coursed with streams, both above and below ground, and the collapse or shifting of subsoil might be attributed to them. The site of the sinkhole is now unknown, and the incident is also largely unknown. The only body of standing water that is in the area today is a lake at The Tarn Bird Sanctuary. In the NW corner of The Tarn opposite Mottingham Station is an
Collapse of the World Trade Center both cases, the section of the building that had been damaged by the airplanes failed, which allowed the floors above the impact zone to fall onto the undamaged structure below. As the collapse progressed, dust and debris could be seen shooting out of the windows several floors below the advancing destruction, caused by the sudden rush of air from the upper levels. The first fragments of the outer walls of the collapsed North Tower struck the ground 11 seconds after the collapse started, and parts of the South Tower after 9 seconds. The lower portions of both buildings' cores (60