Jerry Owczarzak, a member of the Upton Historical Commission, enters the mysterious chamber.
(Photo by Calvin Hennick for the Boston Globe)
Daylight penetrates just the first few feet of the tunnel that leads into the "Upton Chamber," the mysterious man-made cave in Upton. Then the stone walls and murky water underfoot disappear into darkness.
Jerry Owczarzak, a member of the Upton Historical Commission, rolls his jeans up over his combat boots and flicks on his battery-powered lantern. He stoops to enter the tunnel's 3 -foot-tall mouth.
"You don't know what it is, you don't know how old it is, you don't know who built it," says the husky, bearded Owczarzak. "There's probably as many theories as there are people who ask questions."
The town purchased the land surrounding the cave from a private owner last year, and plans to build a park around the structure. The Historical Commission agreed to give Globe West correspondent Calvin Hennick reporter a tour of the centuries-old puzzle.
Read Hennick's story and see an audio slide show featuring more photos, historical newspaper clippings and a diagram of the site by visiting Globe West online.
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