 The Seattle Youth Symphony's Marrowstone Music Festival - now called Marrowstone Summer Music and held on the campus of Western Washington University, in Bellingham, Washington – was held at Fort Flagler on the northern end of Marrowstone Island from 1958 until 1989.Until 1975, it was called the Pacific Northwest Music Camp.The neo-pagan Aquarian Tabernacle Church performs a modern Eleusinian Mysteries play at Fort Flagler over Easter weekend each year.