Long before European explorers rounded the cape, the Mi'kmaq knew it as the home of Glooscap, their most powerful culture hero. Glooscap was a creator and teacher who shaped the landscape, instructed the people, and battled forces of chaos. In one telling, he lived at Cape Blomidon and from there governed the natural world, scattering agates and amethysts across the region as gifts. The legend that connects him most directly to the landscape is the story of Beaver's dam. Glooscap's enemy built a dam across the Bay of Fundy, flooding the Annapolis Valley and washing red topsoil into the sea. Glooscap shattered the dam with lightning, and the waters that rushed through the gap became the bay's extraordinary tides. The red cliffs of Blomidon, stained with iron-rich sediment, bear witness to that story every time the tide retreats and the basin floor gleams crimson in the low Maritime light.

The geology of Cape Blomidon is a study in contrasts. The headland sits at the northeast edge of the Blomidon Peninsula, where it connects to the North Mountain range, a long ridge of tholeiitic basalt formed from ancient lava flows during the Triassic-Jurassic period. But the cape itself is largely sedimentary sandstone, a softer rock that gives the cliffs their distinctive red color and their vulnerability to erosion. The Minas Basin stretches out to the east, its tidal flats exposed and covered twice daily by tides that can exceed sixteen metres in range. Cape Split, the geologic continuation of the North Mountain, juts off the Blomidon Peninsula to the northwest, extending seven kilometres into the bay as a narrow finger of basalt. Together, Blomidon and Split frame the entrance to the Minas Basin like the pillars of a gate through which the world's most powerful tides pass.

Charles G. D. Roberts, one of the founding figures of Canadian literature, wrote a poem titled simply "Blomidon," capturing the headland's brooding presence in the Maritime landscape. Roberts was part of the Confederation Poets, a group of late-nineteenth-century writers who drew heavily on Canadian nature for their themes, and Blomidon's scale and drama made it an irresistible subject. The cape has continued to attract artists and writers drawn to the combination of geological drama and atmospheric moodiness that defines the Bay of Fundy coast. Fog rolls in without warning. The light shifts from harsh clarity to soft diffusion in minutes. And the tides impose their own rhythm on everything, a twice-daily reminder that the landscape here is never static.

Blomidon Provincial Park protects much of the coastal area of the peninsula, with visitor access located approximately 3.5 kilometres south of the cape itself. The park offers camping, hiking trails, and beach access at low tide, where the retreating ocean reveals mineral specimens washed down from the basalt cliffs above. During the American Revolution, the waters near Cape Blomidon saw combat in what is known as the Battle of Blomindon, part of the broader struggle for control of the Bay of Fundy and its approaches. Today the cape's battles are with erosion. The soft sandstone yields to every storm, and the cliff face retreats a little more each year. From the air, the red cliffs stand out sharply against the dark forest canopy and the shifting blue-brown of the tidal basin, a landmark visible for many kilometres in clear weather and a reminder that the forces shaping this coast have been at work far longer than any of the names we have given them.