Sentinel Island
Fortification Rock, once a landmark hill on the Colorado River before it was inundated, now known as Rock Island, southernmost and tallest of the Boulder Islands in Lake Mead, Clark County, Nevada.- Type: Island
- Description: Former land feature on the Colorado River
- Also known as: “Fortification Island” and “Fortification Rock”
Sentinel Island
- Categories: scree, locality, and landform
- Location: Clark County, Southern Nevada, Nevada, Southwest, United States, North America
- View on OpenStreetMap
Latitude
36.05724° or 36° 3′ 26″ north
Longitude
-114.74574° or 114° 44′ 45″ west
Elevation
1,362 feet (415 metres)
Open location code
85873743+VP
OpenStreetMap ID
OpenStreetMap feature
natural=scree
OpenStreetMap feature
place=island
GeoNames ID
Wikidata ID
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Satellite Map
Discover Sentinel Island from above in high-definition satellite imagery.
In Other Languages
“Sentinel Island” goes by many names.
- Chinese: “碉堡岩”
Places with the Same Name
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Localities in the Area
Explore places such as Big Boulder Island and Middle Boulder Island.
Notable Places Nearby
Highlights include Little Boulder Island and Promontory Point.
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