Sign at start of Boardwalk. Here it calls it the Old Growth Cedar Preserve. It also says the boardwalk is 1/4 mile one way. It is actually about 1/2 mile each way. Plus there is an optional alternate trail for part of the trail. It warns that it is wet and mushy, with boots recommended. While I had boots on, Janet was, as usual, wearing sandals, so we stayed on the boardwalk.