The exhibition was opened by cutting a strand of harakeke by Dahlson Halidone and Nyemah Ching-Chambers under the watchful eye of Trevor Chambers and Mayor Bernie.
Foxton Primary School's kapa haka group performed a 350-year-old haka about perseverance and looking after yourself.
The exhibition explains the problem caused by the Whirokino Cut in 1948, the effect it had on the town as well as the decades of struggle to get it acknowledged and fixed.
Councillors, council staff, and community board members attended the official opening of the exhibition, which is hoping to give new energy to the cause.