The Keeler Oak is a white oak, Quercus alba, 88 feet tall with a drip line of 120 feet. About 300 years old, it stood as Colonial troops and Hessian soldiers marched through Black Horse down to Petticoat Bridge, where a famous skirmish took place during the Revolutionary War. The tree is named for the previous owners of the farm where it now stands and serves as the Mansfield Township logo.