down the Pacific Northwest coast
- Rosario Head may be categorized as a bluff. OpenStreetMap identifies it as a peak.
- Chuckanut Formation (Wikipedia)
The Chuckanut Formation in northwestern Washington (named after the Chuckanut Mountains, near Bellingham), its extension in southwestern British Columbia (the Huntingdon Formation), and various related formations in central Washington (including the Swauk, Roslyn, Manastash, and Chumstick) are fluvial sedimentary formations of Eocene age, deposited from about 54 million years ago to around 34 million years ago. The nature of the deposits and included plant fossils indicate a low-lying coastal plain with a subtropical climate; the nature of the sediments indicates metamorphic sources in northeastern Washington.
Washington Trails Association
- Deception Pass State Park - Headlands / Rosario Head / Lighthouse Point (wta.org)
On your next trip to Deception Pass State Park, don’t cross over the Deception Pass bridge. Instead, take the road down to Bowman Bay for some fine hiking along the rugged cliffs. Great views of the bridge over Deception and Canoe Pass, calm Lottie Bay, a woodland walk through hemlock, fir and Pacific Madrone, plus the legend of the Maiden of Deception Pass are what await you here.