About two weeks ago I stumbled across a small tunnel near the old slipway by Dundanion Castle, roughly 1o meters in length it looks like it is being recently used as an illegal dumping spot. I checked Ordinance Survey Ireland site to see what this small tunnel was identified as, according to their Historical Map this was marked as 'Cave'. My guess it was some sort of cellar.

Link to OSI:
http://maps.osi.ie/publicviewer/#V1,571173,571820,7,9
Two weeks later I returned to the site with a better camera.

Concealed Entrance

Entrance from the outside

Entrance. Looks like it turned into an illegal dumping ground

End of the tunnel. There is a small portion of space at the archway, barely a foot deep

"Backstreet Boys Suck" it says

Looks like some blood on the wall
The tunnel also was a habitat for the Meta Menardi, aka Cave Spider. There were plenty of these crawling along the ceiling. They're an unpleasant sight but apparently pose no threat.

Meta Menardi or Cave Spider. Ugly but harmless.

Meta Menardi or Cave Spider egg sack

Meta Menardi or Cave Spider. Ugly but harmless.

Meta Menardi or Cave Spider.Ugly but harmless.