N 25.427273° W 80.720787°
4.0 ft.
Triangulation Station Disk
Square Concrete Monument
Year Established:
Established By:
Good as of February 25, 2014

Our first full day in the Everglades began with guava pastries and some benchmark hunting. After finding one of the many rod-in-sleeve marks along the Main Park Road, we turned and headed south along the access road to the Long Pine Key Trail. This tri-station is right near the trailhead, buried in some sawgrass (so use caution when recovering!). We found a witness post at the site of the station and also the azimuth mark. Also interesting were the nail impressions set into the monument. We've found these a few times in the past, and typically they point toward the reference marks. For some reason, in this case, they each were about 5 degrees off from the correct bearing. The azimuth mark was an easy find just like the station, about .25 north of the station along the access road to the trailhead. It is also in fine condition.

A report on the condition of this survey mark has been submitted to NGS, along with the following recovery note:

The station, both reference marks, and the azimuth mark were recovered in good condition as described. The station is located at the trailhead for the Long Pine Key Trail in Everglades National Park. Witness posts are still in place at the sites of the station and the azimuth mark. Nail impressions on the concrete station monument are several degrees off from the actual bearings to the reference marks. Add approximately 5 degrees clockwise to the directions indicated by the nail impressions to find the correct bearings. Handheld GPS coordinates for RM 1 are 25 25 38.5(N) 080 43 14.2(W). Handheld GPS coordinates for RM 2 are 25 25 37.3(N) 080 43 14.6(W). Handheld GPS coordinates for the azimuth mark are 25 25 52.9(N) 080 43 10.3(W).

Reference Objects
Designation Status Condition Image
KARR AZ MK Recovered Good NGS Azimuth Mark Disk KARR AZ MK
KARR RM 1 Recovered Good NGS Reference Mark Disk KARR RM 1
KARR RM 2 Recovered Good NGS Reference Mark Disk KARR RM 2

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