In this passage from Thomas Pynchon's "Mason & Dixon," the imagery beautifully evokes a sense of wonder and longing for the West. The characters are depicted as being enchanted by the landscape formed by the Moon, mountain ridges, and expansive meadows. This natural setting transforms into a dreamlike quality, as they become spellbound by the interplay of light and shadow, provoking thoughts of an eternal journey toward the horizon.

Furthermore, the text explores themes of movement and transformation. It suggests that both men and women are irresistibly drawn westward as if swept away by a current that compels them to leave behind their past selves. The allure of this journey is amplified by promises of extraordinary discoveries, such as cities of gold, remarkable feats, and fantastical beings, all beckoning them to continue venturing into the unknown.