View of the Jackson Biological Laboratory from the trail to Champlain Mountain.

View of Cadillac Mountain from the trail to Champlain Mountain.

Scrub pine near the summit of Champlain Mountain, Acadia.

View of Frenchman Bay from near the summit of Champlain Mountain, Acadia National Park.

View of the Gulf of Maine from near the summit of Champlain Mountain, Acadia National Park.

View of the Gulf of Maine from near the summit of Champlain Mountain, Acadia National Park.

View of Cadillac Mountain from the trail to Champlain Mountain.

Acadia uses a certain kind of cairn, called a Bates Cairn.

Acadia uses a certain kind of cairn, called a Bates Cairn.

Trail signs in Acadia - here, the Orange & Black Trail on Champlain Mountain.

Champlain Mountain hike, Acadia.

David enjoys the view of Frenchman Bay from the summit of Champlain Mountain, Acadia National Park.