This one mile loop when you’re descending into it along the Lake Alfred Trail, the slope is especially steep.The Ravine Trail leads up and around a deeply eroded gash in the landscape caused by funneling water down into the sinkhole from the hillside above. It’s a study in how geology shapes habitat, an excellent spot for birding, and quite a workout for a hike! No dogs or bicycles allowed. The trails are narrow and somewhat overgrown on the east side of the ravine, so be cautious of poison ivy.