Islay Hill
Volcanic cone in San Luis Obispo County, California
From Wikipedia, the free encyclopedia
Islay Hill is a volcanic cone, and is the southernmost of the nine volcanic mountains and hills that make up the Nine Sisters, located in the San Luis Obispo County of central California.
LocationSan Luis Obispo County, California, U.S.
| Islay Hill | |
|---|---|
Viewed from the south. Righetti Hill (formerly Mine Hill), a minor peak, is seen to the left. | |
| Highest point | |
| Elevation | 783+ ft (239+ m) NAVD 88[1] |
| Coordinates | 35°14′44″N 120°37′21″W[2] |
| Geography | |
 | |
| Location | San Luis Obispo County, California, U.S. |
| Parent range | Santa Lucia Range |
| Topo map | Arroyo Grande NE |
| Geology | |
| Rock age | 20 million years |
| Mountain type | Volcanic plug |
This chain of extinct, but possibly dormant volcanoes, the eight others volcanic plugs, stretches from Morro Bay southeast to Islay Hill, which is on the southeast side of San Luis Obispo (city).
