It's Ogof Arth or Bears Cave and where the township of Gogarth derived it's name from.
It's been lived in by different people for some time.
A Llandudno troglodyte, John Stephens claimed to have lived in the cave for fourteen years, when he was interviewed by a newspaper reporter in 1862.
Another resident, Gwilym Hughes, lived in the cave for a number of years, before he was evicted by the Council and then housed in one of their flats.
I remember seeing Mr John Knowles around town.