A causeway from the first decade of European settlement in Dunedin was officially unveiled to the public in the city’s Wall Street Mall last night.

The pedestrian track, constructed from native timbers, is registered as a category 1 historic place and an estimated $400,000 was spent preserving it and putting it in a temperature and humidity-controlled display unit.

PHOTO: GREGOR RICHARDSON

The structure was discovered in 2008 during demolition of the former Deka building in George St, where the Wall Street Mall is now situated.

The 12m-long and 4m-wide corduroy causeway, constructed between 1848 and 1859, is the earliest known example of a substantial corduroy road in New Zealand and is considered to have outstanding archaeological significance at a national level.