Lost Adventures was founded in 2018 by Mikkel Legarth from Denmark. In 2010, he co-founded a Botswana wildlife conservation project called the Modisa Wildlife Project with Valentin Gruner from Germany. In the local language of Setswana, Modisa means “guardian”. With the Modisa Wildlife Project, Mikkel and Valentin aimed to act as advocates for Botswana wildlife and to assist in easing the conflict between humans and wildlife by cooperating with local and foreign researchers.

Their project – and Sirga, a lioness and member of the Modisa family – found its way to the frontpage of the Daily Mail in 2013. The story went viral, gaining coverage from outlets including CNN, BBC News and China Daily, and even appearing as part of Google’s “Year in Search 2014”. The story led organizers with TEDxCopenhagen to invite Mikkel to present a TEDx Talk in 2013 at the Bremen Theater in Copenhagen. Sirga’s popularity also led to the filming of the award-winning series "Saving Sirga: Journey into the Heart of a Lion", available on Netflix, Animal Planet, Amazon Prime, and ViaSat Nature.

Mikkel’s passion for Africa and its wildlife blossomed in 2008, during a 3-week placement at a wildlife volunteer project in Namibia. The weeks instead stretched into 9 months of adventure. The experience of living and working in the African bush – and the bond Mikkel built with a leopard called Lost – ultimately re-organized his life. He shifted from working toward his dream of becoming a commercial pilot to his newfound dream of supporting the wildlife that had come to mean so much to him. With that commitment co-founded the Modisa Wildlife Project in Botswana. In 2018, he embarked on a new journey with Lost Adventures - named after the leopard Mikkel met in Namibia.