Islay Hill

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Islay Hill
Islay hill.JPG
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 / 35.2455305°N 120.6223921°W / 35.2455305; -120.6223921Coordinates: 35°14′44″N 120°37′21″W / 35.2455305°N 120.6223921°W / 35.2455305; -120.6223921[2]
Location San Luis Obispo County, California, U.S.
Parent range Santa Lucia Range
Topo map Arroyo Grande NE
Age of rock 20 million years
Mountain type Volcanic plug

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 San Luis Obispo County, central California

This chain of extinct 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).


  1. ^ "Islay Hill, California". Retrieved 2014-03-03. 
  2. ^ "Islay Hill". Geographic Names Information System. United States Geological Survey. Retrieved 2009-03-06. 

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