South Twin Reference Mark No. 2 - 1932 - San Francisco, CA
Posted by: Groundspeak Premium Member DougK
N 37° 45.093 W 122° 26.868
10S E 548644 N 4178393
Quick Description: This reference mark disk can be found at the summit of South Twin Peak in San Francisco.
Location: California, United States
Date Posted: 6/5/2013 5:19:23 PM
Waymark Code: WMH86T
Published By: Groundspeak Premium Member Ernmark
Views: 7

Long Description:
This benchmark is located on South Twin Peak in Twin Peaks Park. The disk is inlaid in a 4x12x12 inch block of poured concrete that is attached to a rock formation on the peak. The disc is hard to read. There is an arrow on the center of the disk with "SOUTH TWIN" above the arrow and "2" below the arrow.

Another benchmark disk is also present here about 6 feet away, but it is in bad condition and almost unreadable.

Being so exposed on this hilltop, conditions were cold and very windy.

Condition: Mark found in poor condition

Designation: South Twin 2 - No 2

Benchmark Agency: U.S. Coast & Geodetic Survey

Monumentation type: REFERENCE MARK disk

County: San Francisco

USGS 7.5' Topographic Quadrangle Name: San Francisco North

Find type: Found by luck/skill/knowledge

Web address of this benchmark's datasheet (optional): [Web Link]

NGS PID: HT3042

Benchmark Agency (if other): Not listed

Monumentation type (if other): Not listed

Special category (optional): Not listed

Special Category (if other): Not listed

Local database's URL (optional): Not listed

Visit Instructions:
  1. A closeup photo of the mark taken by you is required.
  2. A 'distant' photo including the mark in the view is highly recommended. Include the compass direction you faced when you took the picture.
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