Weathering and erosion ... weigh on the rocks beneath and slowly push them downhill under the force of gravity. Together with advancing ice, the rocks carve out a path as the glacier slumps ...

Join Isla and Connor as they explore features of glaciated erosion, such as U-shaped valleys ... It was carved out by a glacier, a huge river of ice, during the ice age - just like corries and ...

Opinions expressed by Forbes Contributors are their own. David Bressan is a geologist who covers curiosities about Earth. Research has shown the complex history behind this gap of missing time ...