How are canyons, natural bridges, and salt flats formed? Objective Students will be able to: • analyze a landscape and make conclusions about how it may have formed. • define the difference between weathering and erosion Background Lesson Overview: In groups, students use their knowledge and experience from the field trip to create landscape stories about Death Valley National Park. Students record their stories using a cartoon strip. During the field trip, students will learn how features in Death Valley were formed. Salt flats are formed by floodwaters bringing down minerals from the surroun Duration: 90 Minutes.