"Drumlin hills are the most studied and yet the most enigmatic ice age landform," says U of T Scarborough geology professor Nick Eyles. "Thanks to high resolution satellite imagery and new technology like LiDAR, we're literally seeing the surface of the planet for the first time and finding major surprises in the process."
Shaped like an upturned boat, drumlin hills are found clustered together in their hundreds and thousands in distinct fields called swarms. They are the most common landform across large areas of northern North America and Europe, marking the footprint of great sheets that formed during past ice ages.
Read more at: https://phys.org/news/2016-03-unravelling-geological-mystery-lasers-space.html#jCp
