From Interstate 95 take exit 182A (old exit 45A) to
Follow to the end (3-5 miles) on to
Route 1A through Lucerne to Ellsworth (about 30 miles)
In Ellsworth Route 1A will turn into Route 3
Continue on Route 3 past Wal-Mart through the town of Trenton
To the head of Mount Desert Island (about 10 miles
where there will be a traffic light.
At this traffic light your route will change to 102
(stay to your right and continue through the light)
to Southwest Harbor (about 9 miles).
Smuggler's Den Campground will be on your right.