Man-made underground passage in Bellurgan (dundalk Lwr By; Ballyboys Par.)

Danesholm and I walked the blue road to find the cave in Danes Graveyard. We cut through knee-high grass, passed a fallen wall and came to a narrow gap between black stones. I entered first with my lantern. The passage leaned downward, smelled of wet earth and dropped into darkness so complete the flame became a small white marble. After thirty steps the roof touched my shoulder and the floor tilted upward. I climbed out onto a grass ridge, breathing hard, while Danesholm waited unchanged in the moonlight. I have never measured that distance or drawn it. I only know the ground took us both and gave us back different.