Simplify the following text for a Grade 9 native English-speaking person.
Original: In the extreme northeast : the Franconian Jura ( D61 on the map ) ; The river Southern Alpine Foreland ( D66 on the map ) ; The terminal moraines of the WÃ 1\/4 rm glaciation are roughly the border between the two natural regions .
Simplified: To the south the Southern Alpine Foreland ( D66 on the map ) borders on the Iller-Lech Plateau . The boundary between these two natural regions is partly formed by the terminal moraines of the WÃ 1\/4 rm glaciation .