Simplify the following text for a Grade 8 native English-speaking person.
Original: In the northwest the Iller-Lech Plateau borders on the Swabian Jura ( unit D60 on the map ) and , in the extreme northeast , on the Franconian Jura ( unit D61 on the map ) . The boundary with these two natural regions is roughly formed by the course of the river Danube .
Simplified: In the northwest : the Swabian Jura ( D60 on the map ) ; The river Danube is roughly the border between the two natural regions .