Blocher's Run
Blocher's Run is a Pennsylvania stream which flows from Oak Ridge ( triple watershed point at ) on the Gettysburg Battlefield eastward to the Rock Creek through and near areas of the Battle of Gettysburg , First Day . 
<triplet> Blocher's Run <subj> Rock Creek <obj> mouth of the watercourse <triplet> Rock Creek <subj> Blocher's Run <obj> tributary