canal

Delighted to be able to contribute to the education of Morning Mary! See below from Wikipedia? "The Boyne Navigation (Irish: Loingseoireachta na Bóinne) is a series of canals running 31 km (19 mi)[2] roughly parallel to the River Boyne from Oldbridge to Navan in County Meath, in Ireland. The navigation was once used by horse-drawn boats travelling between Navan, Slane and the port of Drogheda; however is now derelict. The navigation is currently being restored voluntarily. The Boyne Navigation branch of the Inland Waterways Association of Ireland have an agreement with An Taisce giving it an exclusive license to carry out restoration work on the navigation to return it to a usable waterway." I first came across it when kayaking down the Boyne to Slane, though I must admit that I did not realise that the intermittent strips of contained water amounted to a canal! I also crossed it when visiting Newgrange when leaving the Interpretative Centre to reach the coaches taking us to the monument!

"The Rós na Righ was a steam launch[1] which made trips on the Boyne Navigation between Oldbridge and Slane in Ireland. There are many other photos which feature the Rós na Righ which are contained in the William Laurence Photographic Collection.[2] It can be hard to search this collection for examples of these photos below. Photograph 9997 [3] from this collection show Rós na Righ in the foreground and Slane Castle in the background. Photograph 4206 [4] shows Rós na Righ under a man made archway locally referred to as the Scabby Arch [5] on the Boyne Navigation. Photograph 7800[6] show a photo of Rós na Righ at Morgan's/ Rosnaree Lock (a double lock) on the Boyne Navigation. ... " From en.wikipedia.org/wiki/Ros_na_Righ

Maybe here? GeoHive 25" OSI map There are a couple of locks near Rosnaree, but this is the one with a little house.

No streetview, but an aerial view from google.

Niall McAuley I think you are right - you can just see a stone bridge in the background marked on the 25" map (see note).

The lighthouse is still there.

The lock keeper’s house still stands. A lane runs past the house to where there is a cafe, called the Lock Keeper's Inn. It's a favourite place for walkers and cyclists.

Lagan Valley Learning Centre has a pdf with the history of Lock no. 3. It includes a picture of the cottage with a similar looking man outside.

Recently restored? Lots of information - en.wikipedia.org/wiki/Lagan_Canal Flickr is sometimes amazing! In 2010 via shrighley The cottage on the right is way too cute!

There’s another pdf with the history of the cottage, which is the second lock keepers cottage at this lock.

Streetview plods all along the nearby towpaths (fascinating) - the cottage is behind the hedge - goo.gl/maps/ZbC9o6vNfYP2