Keystone is a small unincorporated community on Whidbey Island in Washington State.
Located near the center of Whidbey Island and about 3 miles
south of Coupville, Washington State Ferries travel from Keystone
across Admiralty Inlet to deliver ferry travellers to the
Olympic Peninsula via Port Townsend.
During the summer months in particular, the
Keystone - Port Townsend ferry traffic can be heavy.
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