To reach Hadrian's Wall and Birdoswald Visitors Centre, take the M6 north from Penrith.
Hadrian's wall can be reached by taking the M6 south from Penrith.
mnli hypothesis: Hadrian's wall can be reached by taking the M6 south from Penrith. premise: To reach Hadrian's Wall and Birdoswald Visitors Centre, take the M6 north from Penrith.