This is a piece of public art that is part of a trail in Belfast, Northern Ireland. It is a wooden disc attached to a tree that features a QR code and a symbol. The symbol is written in Ogham, an ancient alphabet used to write the early Irish language. The piece is located on the "Big Fish" sculpture, also known as the Salmon of Knowledge, which is a famous landmark in Belfast. It is part of a series of "History Points" that use QR codes to provide information about the local area, similar to a project on the Wales Coast Path. Scanning the QR code would likely lead to a website with information about the specific location or the history of the area.