• Views from Penobscot Mountain summit.


    National Park Maine

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  • Temporary Road Closure

    A section of the Western Mtn Road in Southwest Harbor will be closed until 8/18 while park crews replace a culvert with a new fish-friendly open bottom culvert. For more information and a map visit our Getting Around Page. More »

  • Trail Closure: Gorge Path weekdays, 7 am - 4 pm

    The section of the Gorge Path between the Hemlock Path intersection and the A. Murray Young Trail intersection is closed until rehabilitation work is completed. The closure will be in effect Mondays through Fridays only, from 7 am to 4 pm.

BioBlitz Series - Ant Blitz

A stick is used to look for an ant nest in the grass.

Locating ants can be a challenge.

NPS Photo

From June 22 to 24, 2003, the National Park Service, Acadian Entomological Society, and Maine Entomological Society sponsored a collecting effort to determine the diversity of native ants found in the Mount Desert Island portion of Acadia National Park. Forty-four species of ants were found in six different survey areas, which reflects a high biodiversity relative to the total species richness in the state of Maine (61 species). Several spatially rare species were found, as well as one new state record. This survey provided an excellent baseline community data set for future studies in ANP regarding changes in ant biodiversity.


Did You Know?

A man boards the Island Explorer bus.

Since 1999, propane-powered Island Explorer buses have carried more than two million passengers in Acadia National Park, eliminating more than 685,000 automobile trips and preventing 6,444 tons of greenhouse gases. The fare-free buses are supported by your entrance fees. More...