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Current ripples in Point of Rocks
Current ripples in Point of Rocks
Checking out the Great Unconformity at the East Bluff Trail at the Devil's Lake State Park
Checking out the Great Unconformity at the East Bluff Trail at the Devil's Lake State Park
Cross-Bedding preserved in Precambrian Baraboo Quartzite
Cross-Bedding preserved in Precambrian Baraboo Quartzite
Skolithos trace fossils in Cambrian Sandstone
Skolithos trace fossils in Cambrian Sandstone
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