the summit of mount nardi is the site for several transmission towers which are used for fm radio, digital television and formerly, analogue tv and fixed wireless broadband internet transmissions, as well as some mobile phone services. the summit can be reached by a bitumen road via nimbin which cost £32,000 to construct in tandem with the first tower in 1962 (the tower itself costing only £10,000) and is the starting point for several walking tracks including the historic nightcap walking track, which once was the principal route taken by travellers and postal workers between lismore and murwillumbah.