Complex sentence: In 1884 the midden was discovered during the upgrading of Garypie Farm Road, and was the site of archaeological excavation throughout the subsequent decades, until the construction of the Fraser Arms Hotel in the 1950s destroyed much of the site.
Split into simpler sentences: In 1884 the midden was discovered during the upgrading of Garypie Farm Road, and was the site of archaeological excavation throughout the subsequent decades. The the construction of the Fraser Arms Hotel in the 1950s destroyed much of the site.