Complex sentence: On certain weekends in September and October, Canobie Lake Park opens its doors in the afternoon and evenings for ScrEEEmfest, a special event run by the park that features Canobie's most popular rides plus five walk-through haunted attractions.
Split into simpler sentences: On certain weekends in September and October, Canobie Lake Park opens its doors in the afternoon and evenings for ScrEEEmfest. ScrEEEmfest is a special event run by the park that features Canobie's most popular rides plus five walk-through haunted attractions.