The map of Yosemite Valley aids in understanding the passage by providing a visual representation of the geographical features mentioned in the passage. It helps to locate specific landmarks such as El Capitan, Half Dome, and Yosemite Falls, which are key points of interest in the passage. The map also shows the layout of the valley and surrounding mountains, giving perspective to descriptions of the landscape and terrain mentioned in the passage. Overall, the map helps readers to better visualize and comprehend the setting and context of the passage.
