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.
The fountain of Fountain Hills, Arizona, spews water to a height of 562 feet (171 m), once per hour. Fountain Hills, Arizona. Fountain Hills is a town in Maricopa County, Arizona, United States, neighboring the Fort McDowell Yavapai Nation, Salt River Pima-Maricopa Indian Community, and Scottsdale, Arizona.