Subdivisions. The Ordovician is the second period of the Paleozoic era. The Ordovician began after the end of a series of extinction events known as the Ordovician-Silurian extinction events which ended around 488 mya.
As a state highpointer, Humphrey's Peak in Arizona was on my bucket list. The trailhead was easy to find. The trail itself was not well maintained and rather rocky, which wasn't too bad going up, but required a lot of caution descending to protect your knees.
Located on the majestic San Francisco Peaks at 9,500 feet above sea level, Arizona Snowbowl is your year-round high elevation destination, whether youâre skiing in the sun in the winter or escaping the desert heat in the summer.