A childhood belief about excursions

My little sister used to be obsessed with the "Land Before Time" videos, where all these dinosaurs live in a place called the Great Valley. In one movie some migrating dinosaurs came and then had to leave, and said they had to move on to the next valley. Well, we were in Utah, and all the cities there are in valleys. We were entering the Salt Lake Valley when my sister yelled out "It's the Great Valley!" We thought that was pretty funny. But then when we went to a different valley she sort of gasped and said "It's the Next Valley!"