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Details for Benchmark: MY2614

N 42° 30.742 W 071° 14.792 (NAD 83)

Altitude: 220

Coordinates may not be exact. Altitude is SCALED and location is ADJUSTED. (more info)

Location:
In MIDDLESEX county, MA View Original Datasheet
Designation:
CROSBYS HILL ECC 1935
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

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Station recovered in poor condition, location as described, along with reference marks 2 and 3. I approached the station from the parking area of nearest office building. As previously reported, most of this station disk seems to have been hacked away with a hatchet. Just a small piece remains attached to the boulder, but it is easily found at the listed coordinates. RM3 was also easily found, set in a boulder that is part of an old stone wall. RM2, not recovered in previous logged visits, was uncovered on a low rock barely above ground level and mostly covered with dirt and leaves. There is an old road/path that passes through the old stone wall, near the station, heading towards the watertower. The reference mark is just on the opposite side of the track from the station and closer to the watertower, in an area with many small pines. RM1 was not found. RM1 appears to lie in an area with piles of old junk and asphalt (or something similar). I didn't have tools to dig for the reference mark.

[Photos:]
photoMY2614-CROSBYS_HILL_ECC_1935-1-20120323
photoMY2614-CROSBYS_HILL_ECC_1935-Garmin60CSx-20120323
photoMY2614-CROSBYS_HILL_ECC_1935-2-20120323
photoMY2614-CROSBYS_HILL_ECC_1935-3NW-20120323
Wider view of station boulder, looking NW
photoMY2614-CROSBYS_HILL_ECC_1935-RM2-20120323
Reference Mark 2
photoMY2614-CROSBYS_HILL_ECC_1935-RM2-20120323
Wider view of RM2
photoMY2614-CROSBYS_HILL_ECC_1935-RM3-20120323
Reference Mark 3
photoMY2614-CROSBYS_HILL_ECC_1935-RM3-20120323
Wider view of RM3
photoMY2614-CROSBYS_HILL_ECC_1935-RM2-20120323
View SW towards RM2 from station, looking across the old track with watertower in the background
photoMY2614-CROSBYS_HILL_ECC_1935-RM3-20120323
View NW from station, looking towards RM3

The station was found yesterday in poor condition. RM-3 was also recovered, but RMs 1 and 2 were not found.

The Detail photo shows what is left of the disk. Fortunately, it appears that the stem and the centering point have survived. It appears that this disk could be reset.

RM-3 is in excellent condition, looking like it was set last week. The site of RM-2 was measured to be just (E) of the raised edge of the approach path, but no boulder (or ledge either) was found a this location, which was covered with moss and forest litter. As for RM-1, also measured to be (E) of the approach path, a large quantity of congealed (and crumbly) asphalt was found to have been dumped in a 20 sq. ft. area around the measured location of the mark, perhaps burying it.

I reached the station by using my car's GPS to find the proper turn (W) off of Crosby Drive in Bedford. I then wound up and around the (S) end of the northernmost of the double office buildings shown in the Google aerial photo, parking in the lot along the high granite block retaining wall to the (S) of the huge water tank on the hillside. Entering the woods about 100 ft. (SW) of the tank, a gentle uphill climb (following your GPSr) brings you to the top of the hill and the station, which is about 200 ft. (NNE) of the water tank. The boulder in which the station is set is the only one that massive in the area, and is just to the left (W) of the access path, which runs (N-S).

In the Detail photo for RM-3, the monel rivet is about the size of a dime.

[This entry was edited by pgrig on Wednesday, July 30, 2008 at 10:00:23 AM.]

[This entry was edited by pgrig on Thursday, July 31, 2008 at 7:52:01 AM.]

[Photos:]
photoMY2614-Detail
photoMY2614-Area
photoMY2614-RM3-Detail
Enlarged, the photo of the rivet shows the same kind of lateral surface gouging that is present on the station disk, implying that someone with access to the Description (since the rivet is surely undetectable from the station itself) tried hard to remove this mark as well. Bizarre.
photoMY2614-RM3-Area
Photo looks (NW) from station towards RM-3, a monel rivet sunk in boulder that is part of the stone wall.

Can't call it destroyed (which it is) and log it found, too.
I found just a little bit that had not been forcefully removed.
Photo of disc condition coming soon.

Spotted a white owl on the way to this one!!!

[Photos:]
photoCROSBYS HILL ECC 1935

Within walking distance from my work. Found the coordinates to be very accurate on my explorist. There's about 1/8 of the marker still there.

Coordinates were pretty close. the marker is mostly destroyed but a piece of it remains. It is on a large stone beside an abandoned road. No view from marker.

Documented History (by the NGS)

01/01/1935 by MAGS (MONUMENTED)
DESCRIBED BY MASSACHUSETTS GEODETIC SURVEY 1935 STATION IS IN EXTREME NE CORNER OF TOWN OF BEDFORD, ON NORTHERN SLOPE OF CROSBY OR INDIAN HILL ON PROPERTY OF ED. BENNETT. STATION IS 0.6 MILE BY WOODS ROAD FROM GATE WHERE CROSBY ROAD ENTERS MIDDLESEX TURNPIKE FROM THE W, OPPOSITE JENNY GAS STATION AND HOME OF L.K. DUNHAM. CROSBYS HILL, 1893 IS 279.08 FEET SSE FROM THIS STATION. AN OCCUPIED SECOND-ORDER STATION MARKED BY A STATE SURVEY STANDARD DISK, STAMPED CROSBYS HILL ECC. 1935, SET IN A BOULDER. REFERENCE MARKS--THREE MONEL RIVETS ARE SET AND LOCATED FROM STATION AS FOLLOWS--REFERENCE MARK NO. 1 IS IN LEDGE OUTCROP, 36.95 FEET, IN GEODETIC AZIMUTH 207 DEG 48 MIN 54 SEC. REFERENCE MARK NO. 2 IS IN BOULDER, 46.92 FEET, IN GEODETIC AZIMUTH 340 DEG 03 MIN 34 SEC. REFERENCE MARK NO. 3 IS IN A 3-TON BOULDER IN A NE-SW WALL, 41.85 FEET, IN GEODETIC AZIMUTH 113 DEG 54 MIN 34 SEC. AZIMUTH MARK--BILLERICA UNITARIAN CHURCH, 1893, IS IN GEODETIC AZIMUTH 160 DEG 00 MIN 58.2 SEC. VIEW IS CLEAR ONLY TO NNW, BEING OBSTRUCTED EVERYWHERE ELSE BY TREES. STATION MAY BE REACHED AS FOLLOWS--FROM THE JUNCTION OF ROUTE 62 WITH MIDDLESEX TURNPIKE (LOWELL STREET) IN BURLINGTON, GO 1.1 MILES NW ON THE PIKE TO JENNY GAS STATION, OPPOSITE WHICH IS THE GATE TO CROSBY ROAD, GOING S AND A WOODS ROAD GOING NW, W, AND THEN S TO SUMMIT 0.60 MILE FROM GATE.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in June 1998.
  • The orthometric height was scaled from a topographic map.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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