This means we now have 100 adventure sites nationwide. The programme started with just 30 sites in March 2016.

"We are excited the programme has reached the milestone of 100 sites," said Alistair Davis, the CEO of Toyota New Zealand. "Its great progress after starting with 30 sites just over two years ago."

"It's fantastic to be working with DOC on a project that encourages Kiwi kids to conserve our natural environment and have fun doing it."

Getting kids more connected to nature with mostly free family-friendly, treasure hunt style activities at specific sites encourages them to engage with the outdoors and, ultimately, earn themselves a medal for their efforts.

"New Zealand has plenty of beautiful places," said Megan Sommerville, DOC's Outreach and Education Programme Developer.

"Toyota Kiwi Guardians showcases local places and reminds us we're lucky we don't have to go far to wiggle our bare toes in the grass or hear a native birdcall."

The four new adventure sites are:

Auckland Botanic Gardens, an Auckland Council controlled organisation, which is in Hill Road Manurewa, straight off the southern motorway. A visitor's centre has a variety of exhibits and suggestions for activities.

Check out the weta hotels and grubs in the gardens. There is birdlife in the native forest, an orchard and freshwater crayfish in the stream. A 2km walk loops through the gardens.

Omana Regional Park which is managed by Auckland Council is between Beachlands and Maraetai and has an ancient Māori Pā site. There is a camp ground to stay overnight and great views to the islands of the inner Hauraki Gulf including Rangitoto and Waiheke.

Omana Regional Park which is managed by Auckland Council is between Beachlands and Maraetai and has an ancient Māori Pā site. There is a camp ground to stay overnight and great views to the islands of the inner Hauraki Gulf including Rangitoto and Waiheke.

Fort Takapuna on Vauxhall Road at Narrow Neck was built in the 1880's and includes gun shelters, a bunker and a now dried up moat. A secret path leads down to the rocky shore, where creatures can be discovered in the rock pools. There are excellent views across the Hauraki Gulf.

Pohuehue Falls is straight off State Highway One in the Dome Valley between Warkworth and Wellsford. There is a 1km round trip walk to the falls with the opportunity to spot native birds and walk through the native forest including Totara.

Toyota Kiwi Guardians is a joint initiative between the Department of Conservation and Toyota New Zealand. Most sites are on Department of Conservation reserves, with a variety of activities, wildlife to see and native fauna and flora to be discovered.

The goal of the conservation programme is to encourage Kiwi kids to become guardians of the land and sea and to preserve our fauna and flora in the decades to come. Since the programme started in March 2016, over 12,000 kids have redeemed more than 25,000 medals after taking part in activities.

Families can get started on their Kiwi Guardians adventure by downloading the appropriate "treasure hunt" map from: www.kiwiguardians.co.nz

Click on the Auckland area of the map to find out the full details about the sites and then plan your adventure.