Waitomo Glowworm Caves is encouraging Kiwis to get their Aussie mates across the ditch by offering to let them in for free.
The 'Head Down Under with a mate from Down Under' promotion offers Australian visitors, with travel ID, to accompany a paying local adult for free.
Tim Loxton of Discover Waitomo says it's the ideal way to get both local and Australian visitors back into the caves.
"With visitors returning to New Zealand, we hope this offer encourages Kiwis to host their Australian guests and share with them one of the most incredible natural settings this country has to offer. The offer was conceived with manaakitanga in mind, a value that underpins all we do in Waitomo," Loxton said.
Despite being a month into the trans-Tasman bubble, Waitomo and many other tourist hotspots are yet to see a significant increase in Australian visitors.
"As many predicted the motivation for visitors since the trans-Tasman bubble opened does seem to have been to reunite with family and friends. We're hopeful that focus will now shift to getting out there and exploring the country together, and sharing a magical experience with visitors in Waitomo," Loxton said.
Should you be worried winter isn't the best time to head into the caves, Loxton says the temperatures inside the caves stay relatively static throughout the year.