This is Old South Mountain Inn, just up MD-40A (Dahlgren Road) from the Appalachian Trail. Founded as early as 1732, it was old at the time of the Civil War. John Brown captured the inn on his way to Harper's Ferry, and it was witness to some of the Battle of South Mountain, when southern General D. H. Hill made it his temporary headquarters. Today, the Old South Mountain Inn is a lovely place for fine dining in a historic mountain setting.

A later owner of the Old South Mountain Inn, Madeline Vinton Dahlgren, also built this lovely stone chapel in 1882, which sits adjacent to the Appalachian Trail.

Here is a peak inside the chapel, which is currently owned by the Central Maryland Heritage League. It can be rented for weddings and other events.

Hike north up the AT past the chapel, and you can see the back of the chapel.

Here you can get a view to the east, which includes a profile of the Catoctin Mountain Range. The Appalachian Trail is visible to the right in this picture.