Times Observer file photo A look at the 646 Mystery Well, a central element of Cherry Grove Old Home and Community Day set for Saturday at the well replica behind the Cherry Grove VFD.

A tour of the site of a well in Cherry Grove that shook global petroleum markets will be part of Cherry Grove Old Home and Community Day on Saturday.

The event – free and open to the public – will be held from 10 a.m. to 5 p.m. at the Mystery Well replica located behind the Cherry Grove VFD, 6045 Cherry Grove Road.

An oilfield history presentation will start at 10:30 followed by a 1.25 mile roundtrip tour to the site of the Mystery Well 646.

After lunch, another oilfield history presentation will be presented.

Mystery Well 646 well transformed Cherry Grove in the 1880s. Owned by the Jamestown Oil Company, peak production from this well alone was 2,000 barrels per day.

Over 2.3 million barrels were produced in Cherry Grove but the boom ended about as quickly as it started. Within a year, the well went from producing 2,000 barrels per day to 5/8ths of a barrel per day.

As a result, thousands of people that had flocked to the area to try to tap into the boom moved on. Those who stayed held annual reunions called “Old Home Day.”

Replicas of the well were first built in the 1980s and started again in 2007 for the 125th anniversary of the well.