This was the 8th of our "unknown location" Fergus O'Connor photographs, but not any longer! See below for tour de force identification by Niall McAuley
of this as the Kilnap Viaduct in Cork...
This means that so far, you've all managed to "find" 7 of 8 hitherto unknown locations - fantastic work.
Date: Circa 1910?
NLI Ref.: OCO 84
Owner: National Library of Ireland on The Commons
Source: Flickr Commons