Underwater Glacial Geomorphology 

A correspondent spotted THIS on the BBC website and passed it on to me.

It concerns sub-glacial landforms which were made under ancient ice sheets. These were where the North Sea is now and have only recently been discovered using seismic survey techniques. Deep seismic techniques are used to find possible oil bearing structures, these shallow ones were originally developed to find suitable foundations for oil industry infrastructure,

The structures may give us a picture of what is happening beneath Greenland's ice cap as it melts under today's conditions of global warming.