Let's break it down:
* Asia: Has a vast array of rivers like the Yangtze, Mekong, Ganges, Indus, and Euphrates, along with mountain ranges like the Himalayas, Tian Shan, Altai, and the Caucasus Mountains.
* Africa: Also has impressive rivers, including the Nile (the longest in the world), Congo, Niger, and Zambezi. Mountain ranges in Africa include the Atlas Mountains, Drakensberg, Ruwenzori Mountains, and Mount Kilimanjaro.
There are no rivers or mountains that are physically located in both Asia and Africa. They are distinct continents with their own unique geographical features.
Perhaps you were thinking of a particular region, like the Sinai Peninsula, which is located at the crossroads of Asia and Africa. This peninsula has some mountains (Mount Sinai) but no major rivers.
If you can tell me more about what you're looking for, I can help you find more specific information.