Gruesome discovery made underneath a "Lincoln oak" tree

[LincolnMan]

Well, it seems that trees hold "treasures" from the past more than we may have thought. The March 2013 issue of America's Civil War has an article about a finding of a cannonball under a tree in Philadelphia:

"A contractor removing a tree stump in Philadelphia's historic Independence Square made a startling discovery in late October: a cannonball left from a Civil War recruiter's encampment, tangled in the stump's roots.
The 2.8 pound ball is 2.9 inches in diamenter and harmless, X-rays by the Philadelphia Police Department Bomb Squad confirmed. The solid sphere is worn from its 150 years in the earth, park archaeologists said.
In September 1862, the war had become increasingly unpopular and enlistments declined in the North. Philadelphia officials appealed to the locals' patriotism to join the army, establishing Camp Independence as a military recruitment on Independence Square."