About Revisions Tilly Foster Iron Mine Old mine road, Brewster, NY More Info Max Depth: Over 150ft/46m Entry Type: Shore Bottom Composition: Rock Spring: Under 50°F/10°C Summer: Under 50°F/10°C Fall: Under 50°F/10°C Winter: Under 50°F/10°C 6/20/2015 4:19 PM LatitudeAdjustment 6/11/2015 12:35 PM LatitudeAdjustment 6/11/2015 10:18 AM LatitudeAdjustment 6/11/2015 10:16 AM LatitudeAdjustment

Two miles west of the village of Brewster along Route 6, It was 600 feet (180 meters) deep.

From 1887 to 1889, the mine was made into an open pit, at the time the largest man-made pit. In 1895, there was a major collapse that killed 13 miners. After the collapse it was flooded by a reservoir nearby. It was used by soldiers in World War II to test their diving equipment. A collection of minerals and artifacts from the mine is at the Southeast Museum in Brewster.

We believe these tunnels were carved in the 1860s-70s, and we think we are the first ones to visit since 1897, when the mine was flooded. Water temps are constant 41-42 degrees.

There are dive reports and video posted on the NJ forum; members3.boardhost.com/Modiver/index.html?1434042199