Exceptionally large White Rhino using a rubbing post at sunset, in the African wilderness

white rhino exceptionally large rubbing post scratching scent marking behavior critically endangered wildlife conservation animal majestic powerful horned rare unique endangered species protection ecosystem environment wilderness safari grassland african landscape discovery interaction educational fascinating conservation effort awareness endangered wildlife special sighting magnificent iconic compelling large mammal vulnerable conservation awareness big five rhinoceros wild outdoors impressive precious wildlife behavior prehistoric thick skin two horns sunset