We saw the deer trail and a heron trail. The Heron Trail is the trail with the Boardwalk. But the other trails loop around to connect. We walked from the visitor center to the Heron trail and then took the Deer Trail. I noticed that there are at least two entrance points to the park. I can't comment if you parked at another entrance.
Yes both trails are connected and lead to the boardwalk. A must see, just beware of weather and take warm cloths if you plan to go in the winter. Super recommended.
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