Cofiwch Dryweryn

[1] Due to its prominent location, stark message, and history of repeated vandalism, the wall has become an unofficial landmark of mid Wales.

The phrase "Cofiwch Dryweryn" has itself become a prominent political slogan for Welsh nationalism, appearing on T-shirts and banners, and as replica murals.

He drove around Wales with his friend Rodric Evans to find a suitable location, after which he spent fifteen to twenty minutes painting the message.

As such the phrase Cofiwch Dryweryn has become a prominent maxim of Welsh nationalism, easily recognisable to people on both sides of the debate.

The impact and notoriety of the message has been highlighted by the numerous occasions the wall has been the subject of vandalism and restorations, and the continuing debate regarding its protection as a Welsh cultural landmark.

In 1991, two schoolboys, Rhys ap Hywel and Daniel Simkins, painted the wall white and repainted the original letters in black.

Ap Hywel later stated in interviews that his Welsh teacher at Ysgol Gyfun Gymunedol Penweddig knew he was responsible as he initialled the painting, but she only admonished him for the spelling error.

[20][21][22][23] Dyfed–Powys Police responded to the vandalism by placing a CCTV camera at the site, stating that they were treating the incident as a hate crime.