Simplify the following text for a Grade 11 native English-speaking person.
Original: Dorah Pass is situated in the Pamir , a high plateau sometimes called `` The roof of the world '' that joins Pakistan , Afghanistan , Tajikistan , China and India .
Simplified: Pamir is a high plateau sometimes called `` The roof of the world '' that joins Pakistan , Afghanistan , Tajikistan , China and Occupied Kashmir .