Prince Harry and Duchess Meghan celebrated the World Elephant Day by sharing some never-before-seen pictures from their trip to Botswana in 2017. The royal couple visited the African country two years ago, just months before they announced their engagement.

The six pictures posted on their Instagram official account show Prince Harry approaching an elephant, and Duchess Meghan's hand while she pets an elephant; images of elephants in the wild were also shared by the royal couple. For a long time, Prince Harry and Duchess Meghan have been drawing attention to the work they are doing with Elephants Without Borders, a charitable organization dedicated to conserving wildlife and natural resources.

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Today is #WorldElephantDay and we are pleased to announce that since we followed our friends at @ElephantswithoutBorders (EWB) on Instagram in July, when we were celebrating the environment, you and our friend @TheEllenFund (@TheEllenShow) have spread the word and EWB have been able to help protect 25 elephants by fitting them with satellite navigation collars! These collars allow the team at EWB to track the elephants, as well as to learn their essential migratory patterns to keep their corridors safe and open so future generations of elephants can roam freely. In honour of this amazing support, EWB have named their most recently collared Elephant...ELLEN! We can't wait to see where she will go! Two years ago on World Elephant Day, The Duke and Duchess of Sussex joined Dr Chase to help in this conservation effort. Below, a few words from Mike and his partner Kelly at EWB: • 'Today is a day to honor and celebrate the majestic elephant and to make a strong stand for conserving and protecting one of the world's most beloved animals. elephants are intelligent, sentient beings capable of emotions from joy to grief. They are 'environmental engineers,' a key-stone umbrella species, and the fight to save them is in effect, a fight to save entire ecosystems and all wildlife. Today elephants are facing many challenges; habitat loss and competition for resources creates conflict with humans, climate change and fires destroy much needed resources and poaching for the demand of ivory makes elephants bigger targets than ever. African elephants are especially prone to human-wildlife conflict because of their large home ranges. Finding, preserving and creating elephant corridors is therefore of great importance in helping to maintain habitats suitable for movement and minimising human-elephant conflict. Corridors are a mitigation technique to better the livelihoods of local communities and the elephants themselves, by providing environment and ample space for wildlife to navigate from one habitat patch to another, without affecting the livelihoods of communities.' • EWB - Dr Mike Chase, Ms Kelly Landen . by DOS © SussexRoyal Additional photos: EWB

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Prince Harry and Duchess Meghan will visit Africa with baby son Archie

This is not the first time that the royals show how committed they are to activism and how Africa has a special place in their hearts. Prince Harry is president of African Parks and patron of the Rhino Conservation Botswana; he has referred to Africa as "his second home" and it is actually where the couple reportedly fell in love!

The Duke and Duchess of Sussex recently announced that they will visit Africa this fall, and that their son Archie, who was born on May 6th will come along, which means that it will be their first official tour as a family! The royals plan to visit South Africa, while Prince Harry will make stops in Malawi and Angola.

Prince Harry and Duchess Meghan pose with their son Archie, Windsor, England, 2019