Complex sentence: In 2011, Significant snowmaking upgrades were added to the resort, including a fully-automated system on popular trail, Flying Yankee, and an additional 100 new low-energy, high-efficiency snow guns and a new snow groomer were also added.
Split into simpler sentences: In 2011, significant snowmaking upgrades were added to the resort, including a fully-automated system on the popular trail, Flying Yankee. An additional 100 new low-energy, high-efficiency snow guns and a new snow groomer were also added.