The
Monument Rocks area near Oakley in western Kansas used to be the bottom of the
ocean.
It is one of the world's best areas for finding marine fossils.
The chalky rocks are made of the remains of billions of tiny marine creatures,
whose calcium skeletons and shells sank to the bottom of the sea as they died,
and became sediment layers.
Then the land rose, and erosion began. The Monument Rocks are some of the
last few remnants of once vast calcium hills and cliffs.
This is the only arch I've ever
seen a cow walk through.
