Complex sentence: Due to its location in a sheltered valley just south of High Cross, and local finds of Roman coins and stonework, some historians have speculated that it sits upon the site of a Roman settlement, but there has been no archeological dig to confirm this.
Split into simpler sentences: Due to its location in a sheltered valley just south of High Cross, and local finds of Roman coins and stonework. Some historians have speculated that it sits upon the site of a Roman settlement, but there has been no archeological dig to confirm this.