Grace's High Falls, 133-foot waterfall in Little River Canyon National Preserve, Alabama.

Grace's High Falls is a seasonal waterfall in Little River Canyon National Preserve, Alabama, dropping 133 feet — the highest in the state. It falls from a sandstone cap over a limestone cliff on Lookout Mountain, and the stream shrinks to a trickle in dry months.

The waterfall formed over millions of years as the Little River eroded sandstone layers of Lookout Mountain. This ongoing geological process gradually shaped the limestone cliff from which the water falls today.

The falls sit on land that became Little River Canyon National Preserve, and the National Park Service has managed the site since 1992. The name honors the Grace family, early settlers of the canyon area, whose name also marks Grace's High Falls on maps of DeKalb County.

You can reach the waterfall from Canyon Rim Drive, which has parking spaces and benches at the viewing point. The viewing area is easy to access and offers a clear view of the falls.

Grace's High Falls drops 133 feet, making it the tallest waterfall in Alabama. It is seasonal: the stream feeding it can dwindle to a trickle in dry weather, so the falls may be nearly dry when you visit. Look for the dark stain the water leaves on the cliff face.