Boulder visit part of picnic

Staff Report

Big Walnut Area Historical Society has a special treat at the Annual Old Fashioned Picnic Tuesday, July 11, in the Big Walnut Conservation Club Shelter House at 12211 Hartford Road east of Sunbury. We will meet there at 5:15 p.m., go to Ohio’s largest glacial boulder, then return to the Club for our picnic about 6:30.

Two of the largest crystalline erratics in Ohio reside in Sunbury. The largest, estimated to be over 200 tons above the ground, rests on private property north of Hartford Road. The boulder under General Rosecrans Statue on Sunbury Square weighs 40 tons and is also one of the five largest in Ohio.

Many have seen the largest boulder from the street but here is the opportunity to visit the boulder and take your photographs. The boulder sits on private property and is not regularly open to visitors.

For the picnic, bring your table service, drink, a dish to share and a FRIEND who might enjoy the historical society. We will be there rain or shine.

For more details about the historical society, this program, the glaciers and a map to the Conservation Club, go to

Staff Report