It is the tallest mountain in Africa. :)
Tanzania Africa
19,563 feet
Mt. Kilaminjaro
situated
Both are correct, but "situated in the center" is slightly more common.
It is situated in London
The city was situated on the bay.
it is situated at Sarnath
it is situated at Sarnath
i do not know but it was situated in or with napolen on his march
France is not situated on a river.