Brooklyn Trail Builders are the team behind the 'Serendipity' downhill trail in Polehill Reserve completed in 2014. Ground Effect provided cash for tools and materials to finish the trail. Polehill Reserve and the Brooklyn area are home to some of the big name mtb trails that make Wellington City a supremely good place to live or visit with a bicycle. 'Clinical' is latest addition to Polehill Reserve completed in 2016. Ground Effect wrote a cheque for more trail building kit. Follow the Brooklyn Trail Builders on Facebook.