Complex sentence: One example is the South Zeal Menhir, which in South Zeal Devon, formed the basis for a 12th Century Monastery built by lay monks, which in later years and to current date became the Oxenham Arms Hotel at South Zeal.
Split into simpler sentences: One example is the South Zeal Menhir in Devon, which formed the basis for a 12th-century monastery built by lay monks. In later years and to current date the monastery became the Oxenham Arms Hotel at South Zeal.