Somes Sound is a dramatic glacially carved fjord on Mount Desert Island, Maine, renowned for its steep granite walls, calm waters, and unspoiled shoreline.
Somes Sound formed roughly 18,000 years ago as glaciers retreated from the region, carving a deep cleft into the pink granite of Mount Desert Island. Reaching depths of around 175 feet in places, it displays the classic U-shaped profile of a glacially sculpted valley, and geologists and naturalists have long regarded it as one of the most striking landforms on the Eastern Seaboard.
The surrounding shores fall largely within Acadia National Park, protecting the hemlock and spruce forests that line the steep slopes. Visitors can access the water at several points, and sea kayaking remains the most intimate way to experience the fjord, allowing you to drift close to the cliff faces and watch osprey circle overhead.
The village of Somesville sits at the northern head of the sound, offering a glimpse of 18th-century Maine settlement life with its white clapboard buildings and arched footbridge. Local seafood shacks and restaurants in nearby Southwest Harbor and Northeast Harbor serve fresh lobster and chowder a short drive away.
Somes Sound rewards patience and quiet attention, offering a landscape shaped by deep geological time that feels genuinely apart from the busier parts of coastal Maine.
Visit during early morning when the water is glasslike and mist clings to the granite walls for the most dramatic views.
Launch a kayak from Hall Quarry or the town of Somesville to paddle the full length of the sound at your own pace.
Bring layers even in summer, as the water channels cool air along the fjord and temperatures can drop quickly after sunset.
Hike the Flying Mountain trail for an elevated perspective looking directly down into Somes Sound and out toward the open ocean.
Visit in late September or early October when fall foliage frames the granite cliffs in amber and gold with far fewer crowds.
Cruise at sunset with a narrated ride around Acadia and the Cranberry Isles
Late-afternoon cruise to see seals and cruise into Somes Sound fjord
Cruise Great Harbor, Cranberry Islands, and Somes Sound with a 45-minute island stop
Tour Bar Harbor and Acadia’s Park Loop Road by private van
See Cadillac Mountain, Park Loop Road, and coastal villages in one flexible private day
Paddle Western Bay and Somes Sound with a Registered Maine Guide
Private 5-hour Mount Desert Island tour beyond Acadia National Park hotspots
Cruise Great Harbor and Somes Sound with narration and an island stop