"In July 2022, works begin to extend the boardwalk around the crater rim to the tihi (summit) and carpark area.

The boardwalk extension will create a safe and durable walking surface around the crater rim. It will provide a quality visitor experience while preventing further damage to the underlying cultural and archaeological values of the Maunga.

Construction is expected to take nine months with completion in March 2023." From https://www.maunga.nz/maunga/maungawhau/