A pile of ice age debris is exposed along the Chagrin River, just south of US 6 in Kirtland, Ohio. The debris collected in a ravine as a succession of ice sheets came and went through the area over thousands of years. There's about 100 feet of debris in the Chagrin River bed in that area on top of the shale bedrock, so about 100 vertical feet of the debris are exposed. Further north, in Willoughby, Ohio the bedrock is exposed because all the debris has been washed away over the millennia since the last ice age.
There are lots of videos, web sites, etc... that try to explain how the expanding and contracting ice sheets (sometimes referred to as glaciers) shaped the landscape, but I think the generalized models don't really shed much light on specific details, like what was the process that preferentially filled in specific low spots in this area, like the hundreds of feet piled up on the landscape shown above, while only tens of feet are deposited elsewhere, like where I live.
There are some good photos of the Greenland Ice Sheet that show the amount of debris that's pushed and carried by the ice sheet. Material from the size of huge boulders down to dust drop out as the ice melts. This photo shows that very well.
Anyway, the obvious features in the landscape left by past ice ages show the big pile of delusions that plague people today. All those delusions are based on the ego/the "I". The idea that our current technological civilization is going to last forever is just one manifestation of that, as is the idea that some individuals think they will live forever in a dynamic world of immense forces like ice sheets and asteroids and solar flares. It's just a childish/oblivious model of reality.
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