Donovan Rokitta van Graan aka. Muis, born 06 September 1985 is an amateur adventurer and avid trail runner. Muis has climbed a number major mountains all over the world with a number of first ascents in remote mountain ranges. He is also the winner of the Mountain Club of South Africa Supertramp award 2007. He has also run a number of major races in South Africa including 3 Comrades and a number of other ultra-marathons including The Cederberg Traverse 100km which he placed 10th in.