Thanks to those of you who pointed out that this is Spanish Parade on the Spanish Arch side of the Claddagh in Galway City. That's Claddagh Quay and Nimmo's Pier in the background.
According to colman.rushe this photo is mentioned in Peadar O'Dowd's book Down by the Claddagh, so I went off and got our copy of Down by the Claddagh (1993), and there indeed is this photo with the caption underneath:
"Bringing the fish to market: As this postcard (printed in Berlin) states, four Irish Fish Wifes make their way up along Long Walk to the fish market in front of the Spanish Arch or An Póirse Caoch (the Blind Arch) as it was known then. (Courtesy Jimmy O'Connor)
Now, a bigger challenge would be to identify some of the women, and we have received very tentative information that these women may be Nonnie O'Donnell, Mary Rodgers, Kitty Conneely and a Mrs Gill, all from the Claddagh. Does that ring any bells?
This image was taken from Flickr's The Commons. The uploading organization may have various reasons for determining that no known copyright restrictions exist, such as:
The copyright is in the public domain because it has expired;
The copyright was injected into the public domain for other reasons, such as failure to adhere to required formalities or conditions;
The institution owns the copyright but is not interested in exercising control; or
The institution has legal rights sufficient to authorize others to use the work without restrictions.
Please add additional copyright tags to this image if more specific information about copyright status can be determined. See Commons:Licensing for more information.
No known copyright restrictionsNo restrictionshttps://www.flickr.com/commons/usage/false