This is the northern-most and last trail in the Grassy Waters Preserve trail system. It is listed as Hog Hammock Trail on the available maps, but the trail itself is named the Promontary Trail as indicated on the signage. The trail is an out-and-back and follows atop a gravel levee, bordered by palm trees, and ends at a picnic pavilion. There are a few openings alongside the trail where views of the preserve can be had. There are also a few picnic pavilions along the way.