Wellington-McPherson Lowlands, Smoky, Flint, and Red Hills

Wellington-McPherson Lowlands

Permian seas in central and western Kansas left behind thick layers of salt. It was accidentally discovered in 1887 by drillers looking for oil and gas near Hutchinson
in Reno County. It is 6058 square miles all together. There is a Salt Museum in Hutchinson where you can visit the salt mines.

Smoky Hills

The smokey hills are west of the flint hills, east of the high plains, and north of the Arkansas River Lowlands also north of the Wellington-Mcpherson Lowlands.
Sandstone was formed from sediment carried by rivers into the shallow seas from the east. Fossils of seashells and even sharks' teeth are frequently found in this area. There is also a Smoky Hill River Wildcat Canyon in western Trego County. Fossilized sharks, fish, turtles, mosasaurs, pterosaurs and other marine vertebrates use to live there.

Flint Hills

The Flint Hills cover 9,783 square miles. The Flint Hills remain, for the most part, a natural prairie grassland. Flint Hills region looks much as it did 10,000 years ago.

Red Hills

Sometimes hills and valleys are formed when underground rocks, rather than surface rocks, are eroded away forming a cavity in the ground, especially in limestone bedrock. This is caused by water erosion and provides a route for surface water to disappear underground. However in one word sinkholes come in all sizes, some only a few feet across.