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 highest town is Alma, Colorado at an elevation of 10578 feet (3224 m). (2010 pop. 179)(see below) However, the town of Winter Park (pop. 662) may very well claim to â¦be the highest town in the US. Its town limit includes a ski area at up to 12060 feet in elevation.