Londonderry, the owner opened a trapdoor in his yard, and allowed me to look down into a souterrain.
In many cases we do find the entrance to a souterrain is in a fort.
My best thanks are also due to Mrs. Hobson for allowing me to make use of her photograph of the entrance to this souterrain.
It is a souterrain situated in Glenshesk, about three miles from Ballycastle.
She describes it as "a souterrain containing six chambers, with a length of eighty-seven feet exclusive of a flooded chamber."
In 1317 every man dwelling in an ooan, or caher's souterrain, was summoned to join the army of Domched O'Brian.
It is a small fort, and on the top we saw the narrow entrance to the souterrain.
No mortar has been used in its construction, and I should say it is an old souterrain, or part of a souterrain.
On the other hand, there appears to be no objection to growing crops on the top of a souterrain.