RATH & possible Man-made underground passage in Drumharriff

Drumharriff holds a rath and a possible underground passage, marking the kind of hidden depth people have long suspected beneath ordinary Irish ground. The official label hedges because the earth keeps part of its answer back. A fortress, a shelter, a smuggler's cut or a forgotten way of moving through rain and dark could all fit the shape. That uncertainty does not weaken the place; it completes it.