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Altar Rock, Massachusetts


Prominence: 50 ft, 15 m

Elevation: 100 feet, 30 meters


True Isolation: 0.82 mi, 1.32 km
Peak TypeHill
Latitude/Longitude (WGS84)41° 16' 53'' N, 70° 1' 30'' W
41.281484, -70.024924 (Dec Deg)
414169 E 4570512 N, Zone 19 (UTM)
CountryUnited States
State/ProvinceMassachusetts
County/Second Level RegionNantucket
City/TownNantucket
Links

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Other Web Sites
     Altar Rock at ListsOfJohn.com

Weather and Snow
     National Weather Service Forecast
     NOAA Snow Depth Map

Ascent Info

Total successful ascents logged by registered Peakbagger.com users: 15
     Show all viewable ascents/attempts (Total: 11)

Selected Trip Reports from this site:
     2011-10-02 by Ryan Aschbrenner
     2015-04-26 by Wayne Snyder
     2020-03-28 by David Darby (GPS Track)

Nearby Peak Searches:
     Radius Search - Nearest Peaks to Altar Rock
     Elevation Ladder from Altar Rock
     Prominence Ladder from Altar Rock

Altar Rock, is known by the locals as the highest on the Island (even though it is not). As one of the highest on the Island it commands perhaps the best views in all directions and therefore a very popular destination. Located in Middle Moors it is part of Nantuckets' Conservation Foundation, a white Navigation Beacon sits to one side of the summit .... a plaque bolted to a large rock memorializes Henry Coffin (1807-1900), a lifelong resident.
Click on photo for original larger-size version.
Looking towards the "Radio Facility" (see topo) from the summit of Altar Rock (2015-11-10). Photo by Pat Wymore.
Click here for larger-size photo.
Web Map LinksPeakfinder Panorama
GeoHack Links   CalTopo   MyTopo   Bing Maps
Google Maps   Open Street Map
ProminenceKey Col Page  (Detailed prominence information)
  Clean Prominence: 50 ft/15 m
  Optimistic Prominence: 60 ft/18 m
  Key Col: 50 ft/15 m
IsolationIsolation Page  (Detailed isolation information)
   Distance: 0.82 mi/1.32 km
   Isolation Limit Point: 41.2808, -70.0092
Nearest Higher Neighbor in the PBC database:
    Folger Hill  (E)
RangesContinent: North America
Range2: Appalachian Mountains
Range3: Northern U.S. Appalachians
Range4: Mid-Atlantic Highlands
Range5: Northeast Islands/Cape Cod
Drainage BasinsAtlantic-Eastern USA
Atlantic Ocean
IslandNantucket Island
Topo MapSiasconset O41069b8 1:24,000
Data Source1:25,000 (or larger) Topographic Survey Map
This peak was submitted to the Peakbagger.com database by Ben Lostracco.
Dynamic Map

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