4x4: Safari Car Rental (highly recommended)Travel itinerary:MonteChristo Riverside CampsitePalmwag LodgeHoanibOpuwoHouse on the HillMarble MineRooidrom PassRed, Blue, Orange, Green DrumHartmann ValleyKunenePurrosOngongo Waterfall CampsiteDamaralandHuabUgab Rhino CampCape CrossSpitzkoppe