We've found the mystery chalk artists.
They're wanted by Destination Orewa Beach to help with a lead up to a Paint the Town event on March 22.
A $100 Casablanca restaurant voucher was even offered as a reward if the artists came forward.
Surprised at all the fuss, Yolanda Bartram and Alex Heydenrijk were back chalking parts of the 7.5km Te Ara Tahuna Estuary cycleway and walkway this week.
The Rodney Times found the pair adding more temporary artwork, working on a dinosaur fossil.
They're commissioned by Auckland Transport.
"We're inviting people to slow down and look at the art," Alex says.
Most of the chalk work has a message, perhaps inviting pathway users to keep left, mind their dogs and for cyclists to slow down at tight corners or steep sections.
Yolanda says they have been working on the art during the day so there is no secret to the project.
They hope their work will continue to be appreciated during upcoming charity walks around the estuary.
These include the Hibiscus Hospice Twilight Walk on Saturday from 4pm and earlier the same day a fun walk and ride to raise funds for the Respite NZ Trust.
Yolanda, director and head artist at BodyFX studio in Kingsland, says they'll be back face painting for Kiara's Angel Walk around the estuary on March 2. It's a fundraiser for the Child Cancer Foundation in memory of Kiara Morgan of Orewa who died in 2011.
- © Fairfax NZ News
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