The caption also included a quote by one of the most famous figures of women's suffrage movement in New Zealand, whom Meghan also referenced during a speech earlier this week.
"The rain that refreshes the parched ground, is made up of single drops — Kate Sheppard," it read.
The Duchess of Sussex praised New Zealand for granting women the right to vote 125 years during a speech at a function at Government House on Sunday night, and quoted Sheppard, who features on the nation's $10 bank note.
"All that separates, whether of race, class, creed or sex is inhuman and must be overcome," she told the other guests.
The new photo shared by the royals was taken after Harry and Meghan had just completed their walk along a suspension bridge in the forest in the Redwoods Treewalk on Wednesday.
The couple flew home to London from Auckland yesterday following their whirlwind tour of Australia, Fiji, Tonga and New Zealand.
Earlier in the tour, Meghan shared a snap of her own, taken of Prince Harry rehearsing before the Invictus Games' Closing Ceremony.
