A fun loop hike up to the top of a rocky mountain called South Bubble which has a very cool large glacial erratic left over from the last ice age. It is perched on the very edge of the steep cliff face and looks like it could be pushed off..... I bet you can't do it! The trail then descends to the north end of Jordan Pond for some great views unfortunately there is no swimming here. Then you'll follow a nice carraige road back to the trailhead.
From Route 3 and the Hulls Cove Visitor Center head south on the Park Loop Road to the Bubble Rock parking lot.
There is a $20 per car fee to enter the National Park.