John Boyd Thacher State Park 📍

John Boyd Thacher State Park, is situated along the Helderberg Escarpment, one of the richest fossil-bearing formations in the world. Even as it safeguards six miles of limestone cliff-face, rock-strewn slopes, woodland and open fields, the park provides a marvelous panorama of the Hudson-Mohawk Valleys and the Adirondack and Green Mountains. The park has volleyball courts, playgrounds, ball fields and numerous picnic areas with nine reservable shelters. Interpretive programs are offered year-round, including guided tours of the famous Indian Ladder Trail. There are over 25 additional miles of trails for summer hiking and mountain biking, and winter cross-country skiing, snowshoeing, hiking, and snowmobiling.

http://nysparks.com/parks/128/

🖼️ Photos 📽️ Videos

Thacher Park OSI Parcel 1960

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Kind of fascinating to compare the Thacher Park OSI Parcel to today. While parts were farmed in the sixties, it's less than you might think. A lot was wooded back then. And the pond didn't exist back then. 
Thematic Map: Water Supply in the Capital Region
Map: Blenheim Hill State Forest

John Boyd Thacher Park in 1900

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It should be noted that the Berne 1900 quad seems like it is a revised version, as Thacher Park is listed on this map, even though it didn't become a park until 1914.
Terrain Map: Mahanoy Mountain
Map: Rome Sand Plains Unique Area
Map: Severence Hill Trail