Callaway NW, Nebraska 1:24,000-scale Topographic Map

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Go to Map Locator and Downloader and search "Callaway NW"
What do you think the white spot is in the north central part of this map?
If you thought the spot was a crater, what would you do next?—> Investigate! Map inquiry fosters and goes hand-in-hand with field work.
The impact crater, despite the fact that the map was made in 1951, was not noticed. In 1991, a professor at the University of Kansas began to ask questions about this spot. He conducted several field investigations with his students. While some are convinced that this is a crater, others are not. Undiscovered mysteries about our planet exist that can be examined with the help of maps!
Does the amount of relief of this landscape challenge your stereotype of the Nebraska landscape?
Do you think much has changed since 1951 in this area? Actually, more than you might expect! There was a great deal more tree cover in 1997. Why? This shows that even areas with a decreasing population can change physically.