Find Your Park logo
Read about the Newest National Natural Landmark
NNL 50th Anniversary

For the more information about the air resources of the National Park Service, please visit

Passadumkeag Marsh and Boglands

Passadumkeag Marsh and Boglands
Passadumkeag Marsh and Boglands

One of the largest, unspoiled wetlands in the state of Maine, Passadumkeag Marsh and Boglands contains a unique blend of bog and marsh communities. The marsh is partially bounded by eskers, including the classic Passadumkeag Esker, or Enfield Horseback, known world-wide as an example of glacial geology.

Location: Penobscot County, ME

Year designated: 1973

Acres: 6,100

Ownership: Private

← Back to NNL listing for ME.

← Back to listing of all states and territories.

Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.

Last Updated: June 28, 2012