On October 30, 2010, I was able to make a return trip back to Lake Placid to attempt to find the three points comprising V. Colvin’s “great baseline” extending from Signal Hill down to the southerly shore of Lake Placid and then across the lake to Hawk Island. The original measurements of the land segment of this baseline is detailed below under “measuring bars” and represents one of the more precise measurements ever made in the Adirondacks.
With the invaluable assistance of Bob and Dan Marvin who provided GPS services and a boat, we were able to recover the north base mark on Hawk Island.
Colvin’s signal over the mark is as shown here:
Unfortunately, the station on the south shore of the lake (if still in) rests under a newly laid, imported stone patio that I don’t think the owners would have taken kindly to if we dismantled it. We then proceeded to Signal Hill to search for the mark that was listed in 1946 as being destroyed by road construction. After numerous 3-4 feet deep test holes were dug in the gravel road nothing was found.
Special thanks goes out to Northern and Bob and Dan Marvin for their assistance in completing this recovery.