Kate Middleton and Prince William are spending another day in Scotland.

For the second half of their two-day visit to the Scottish Isles on April 30, the royal couple spent the day outdoors, highlighting the importance of protecting the natural environment.

The Duke and Duchess of Rothesay, as they are called in Scotland, met the Countryside Rangers from the Mull and Iona Ranger Service at the Ardura Community Forest, who play a vital role in conservation on the two islands.

Kate Middleton in Scotland.

Wattie Cheung/Kensington Palace

They also shared the beauty of the natural world with the next generation, joining a local school group as they take part in outdoor learning at the ancient forest, which is now under community ownership.

Prince William, 42, and Princess Kate, 43, also met the Ardura Acorns, an outdoor learning group on the island that champions 0 to 5-year-olds and their caretakers through activities like walking nature trails, den building, animal tracking and storytelling.

Prince William and Kate Middleton in Scotland.

 Mirrorpix/MEGA 

Much of Princess Kate’s royal work is centered around the importance of the first five years of a child’s life for development. She has also been an advocate of connecting with nature, including the practice of “forest bathing.”

The connection with the outdoors took on a deeper meaning amid her cancer treatment last year. In her first health update after announcing her cancer diagnosis, the royal appeared in a photo that showed her posing outdoors and leaning against a tree in Windsor, where the family lives. Royal biographer Sally Bedell Smith told PEOPLE of the snap, “There she is in nature, which has fortified her, and looking upward in a sign of real hope and encouragement for everybody.”

Kate Middleton in Scotland.

Wattie Cheung/Kensington Palace

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Prince William and Princess Kate’s visit to Scotland kicked off on April 29, their 14th wedding anniversary. Their first stop was in the town of Tobermory on the Isle of Mull, where they visited a community hub and an artisan market. Later in the day, they checked out a local croft to learn about sustainable farming and hospitality on the island.