Natural Attraction

Man O’War Brook Falls

Natural Attraction★ 4.5
Man O'War Brook Falls cascades over granite ledges at the edge of Acadia National Park's forested shoreline.

Along the shoreline, a mossy cascade flows toward Somes Sound. Man O’War Brook descends over granite and metamorphic rock into coastal waters. The landscape bears the mark of Pleistocene glaciation, with granite about 420 million years old shaping the scene.

Access & viewing

Accessibility
Moderate, dirt trail with roots; some steep sections

Conditions & safety

Permits Required
0

Planning advice

Nearby Attractions
Somes Sound, Mount Desert Island, Acadia Mountain Loop, nearby hiking trails
Nearby Facilities
Restrooms at Acadia Mountain Trailhead; no en-route facilities
Best Time To Visit
Spring and fall for foliage and higher water flow; late afternoon light is ideal for photography.
Tips Advice
  • Look for the cascade along the shoreline as you near Somes Sound
  • The hike from the Acadia Mountain Trailhead is about 1 mile one-way; plan 2 miles round trip if looping
  • Trail is moderate with roots; sturdy boots are essential
  • Parking can fill during peak season; arrive early
  • Boat tours offer a water-view perspective of the falls and Somes Sound
Insider Tips
  • Start from Acadia Mountain Trailhead for shorter access
  • Watch for exposed roots along the trail
  • Boat-view vantage from Somes Sound is possible on tours

More details

Park Area
Acadia National Park, Mount Desert Island
Family Friendly Notes
Moderate hike with exposed roots; supervise children near drops
Attraction Type
Coastal Waterfall
Elevation Feet
0
Distance From Entrance
1 mile one-way (Acadia Mountain Trailhead to falls); 2.7-mile Acadia Mountain Loop
Accessibility Level
Moderate (trail with roots and some steep sections)
How To Get There
From the Acadia Mountain Trailhead, take the Man O’War Brook Trail toward Somes Sound. The falls are encountered as the trail nears the water; the Acadia Mountain Loop offers a 2.7-mile alternative.
Parking Availability
Parking can fill during peak season
Seasonal Access
Open year-round; spring conditions can be slippery, especially near the falls
Main Features
Coastal Waterfall; Somes Sound fjord; mixed bedrock including granite ~420 Ma; glacially influenced terrain
What Youll See
Mossy rock faces, a gentle cascade, shoreline views toward Somes Sound, forested slopes
Unique Characteristics
Coastal waterfall feeding into Somes Sound, the East Coast's fjord system; Mount Desert Island granite dating ~420 million years
Safety Considerations
Slippery rocks near water; roots and exposed trail surfaces; some steep sections; cell service spotty
Best Viewpoints
Along the Man O'War Brook Trail as it approaches Somes Sound; shoreline vantage spots provide water-level frames
Photo Opportunities
Golden hour reflections on Somes Sound; moss-covered granite and the cascading fall
Photography Spots
Golden hour along the shoreline; frames oriented toward Somes Sound and the cascade
Stargazing Quality
Good
Sunrise Sunset Quality
Good; coastal sunsets over Somes Sound
Visitor Center Present
0
Restrooms Available
1
Picnic Areas
0
Interpretive Signs
0
Cell Service
Spotty
Water Available
0
Guided Tours Available
0
Trailheads Here
Man O'War Brook Trail from Acadia Mountain Trailhead; connection to Acadia Mountain Loop
Connecting Trails
Acadia Mountain Loop; Man O'War Brook Trail
Nearby Services
Restrooms at Acadia Mountain Trailhead; park interpretive programs available
Common Wildlife
Native forest birds and general park fauna
Best Wildlife Times
Morning
Fall Colors Peak
Autumn
Geological Formation Type
Coastal Waterfall
Scientific Interest
Demonstrates freshwater discharge into a marine fjord and interaction with glacially derived bedrock; granite dated to ~420 Ma
Best Visit Times
Late afternoon for light; spring/fall for stronger flows
Best Season
Spring and Fall
Weather Patterns
Spring: slippery trails; summer: crowds and coastal weather variability; conditions can shift with sea breezes
Busiest Season
Summer, especially July
Fishing Nearby
0
Swimming Allowed
0
Boating Allowed
1
Climbing Areas
0
Review Summary
Visitors describe a peaceful, forest-integrated waterfall experience rather than a dramatic cascade; the 1-mile hike adds a quiet coastal context to Acadia’s trails.

Location

Man O'War Brook Falls cascades down rugged granite cliffs at Acadia National Park, a dramatic coastal waterfall.Man O'War Brook Falls seen from rocky ledges with a small dog in the foreground, Acadia National Park coastline nearby.Man O'War Brook Falls at Acadia National Park along a rugged rocky ledge above misty water.Man O'War Brook Falls cascades over rugged rocks into a calm Acadia National Park inlet.

Frequently asked questions

Do I really need to arrive before 7am to get parking?

Parking can fill during peak season; plan to arrive early in summer or consider arriving before mid-morning for a comfortable start.

Is it worth the 1-mile hike just to see a waterfall?

Yes. The trail offers a quiet coastal forest experience and views toward Somes Sound; it’s a balanced mix of scenery and geology.

Can I see the falls from the water?

Yes. A boat tour provides a water-view perspective of the falls and Somes Sound.

Is the trail kid-friendly?

The 1-mile one-way hike is moderate with roots and some slopes; supervise children and wear sturdy boots.

Is the area secure for alone travelers?

Stay on marked trails, be cautious near water edges, and inform someone of your plans; cell service is spotty in parts of Acadia.

Little Harbor Brook

Shallow brook beside a mossy trail; formed by glacial erosion and meltwater through Ellsworth Schist.

Eagle Lake

Eagle Lake — glacially carved freshwater lake with clear, deep water in Acadia NP

Cadillac Mountain

Granite crown; first light on the U.S. coast; sculpted by ancient glaciers.

Sources

Information is compiled from official sources, verified traveler reviews, and editorial research. Learn how YourNPGuide works.

Last updated January 2026. Report an issue.