Bubble Rock


Bubble Rock, aka the Balance Boulder, is positioned perilously on the southeast corner of South Bubble’s summit in Acadia National Park. It’s a superb example of a glacial erratic, a massive boulder that was carried here by past glaciers’ powerful movements. The rock is thought to have originated 40 miles north in Lucerne. Its coarse-grained white granite differs significantly from the familiar pink granite of Mount Desert Island. Bubble Rock is undoubtedly Maine’s most iconic granite formation. It appears to be perched precariously on a cliff’s brink, ready to tumble at any moment.

The area around Bubble Rock is a beautiful site to photograph and explore, but please exercise caution while visiting with youngsters, as the cliffs are fairly steep and a fall may be fatal. Because this mountain attracts a large number of visitors, please respect any roped-off areas or “do not hike here” signs, which are in place to protect the vegetation.

Exploring Acadia soon? Be sure to check out the 17 Best Photography Spots In Acadia National Park!



  • Type: Viewpoint
  • Elevation: 768 ft
  • Prominence: 126 ft
  • Parent mountain: South Bubble

Hiking Info

  • Easiest trail: Bubble Rock Trail
  • Trail distance: 1.2 miles (out and back)
  • Trail difficulty: Easy
  • Trail popularity: Medium
  • Elevation gain: 288 ft
  • Estimated hike time: 1 hour


  • Address: Park Loop Rd
  • Town: Mt Desert
  • State: Maine
  • GPS: Lat 44.33961 Lng -68.25307
  • Parking notes: There is a paved parking lot located just off Park Loop Road at the trailhead. The parking lot holds about 25 cars.
  • Parking directions: HERE
  • Location directions: HERE

External Website:


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