Thornton Quarry...here you're looking at rock 450 million years old. The rock here is made of coral reefs from when Chicago was located below the equator.
Viewed: 822 times.
|
Cool erosion in the quarry.
Viewed: 801 times.
|
Waterfall at one of our sites
Viewed: 410 times.
|
Woods outside of Chicago.
Viewed: 374 times.
|
Ice Age Earth class
Viewed: 362 times.
|
People attempting to cross the stream without getting soaked.
Viewed: 352 times.
|
Waterfall on the other side
Viewed: 348 times.
|
Stratiated bedrock grinded by glaciers.
Viewed: 339 times.
|
Glacial Till dumped in Chicago 15,000 years ago
Viewed: 359 times.
|
