He says new carvings will provide a visual presence to mark the tōpuni status of the whenua and its many layered history.
Master carvers Fayne Robinson (Ngāi Tahu) and Riki Manuel (Ngāti Porou) worked to create the new shelter, pou and installations.
Kura Tawhiti / Castle Hill is one of 14 tōpuni sites across the South Island, recognised as culturally significant to Ngāi Tahu.
"It's incredibly rewarding to see the results of working with Ngāi Tūāhuriri whānui to restore their values into this site," said DoC's local operations director Jo Macpherson. The upgrade is also designed to protect the area's fragile ecosystem, she says.
Other upgrades include the construction of a new loop track, shelters and picnic tables.