Complex sentence: Later surveys authorized by Baltimore on the Eastern Shore of the Chesapeake Bay indicated that the southern boundary would continue across the peninsula at the mouth of the Pocomoke River marked on the north shore by a rock outcropping labelled as "Watkins' Point".
Split into simpler sentences: Later surveys authorized by Baltimore on the Eastern Shore of the Chesapeake Bay indicated that the southern boundary would continue across the peninsula at the mouth of the Pocomoke River. It was marked on the north shore by a rock outcropping labelled as "Watkins' Point".