We don't need no education? This cache is in Greenville Park in East Belfast, which I walked through when going to school as a child. (Now I walk my son through it on his way to school. Plus ça change...) The park is bounded by Grand Parade and Dunraven Park on two sides, and on the other sides it merges invisibly into Orangefield Park where its two bridges cross the Knock River. One of the bridges is named the Avalon Bridge, after former local boy Van Morrison's album Avalon Sunset, which includes the song 'Orangefield'.
For caching purposes, parking is available on Dunraven Park near one set of gates, or, as the park now forms part of Connswater Community Greenway, you can park anywhere along the greenway and enjoy a walk/cycle through to Greenville Park.
The cache
This cache is a camouflaged micro/nano near the perimeter of the park.