If the contour interval of the map is 10 feet, what is the height of the dune marked with an X? Assume that points not falling on a contour line are one half contour interval higher or lower than the nearest contour line. Assume the base where you are starting at is at sea level. What are inselbergs? A. Raised terraces along shorelines B. The eroded remnants of mountains found in deserts C. A very tall petrified sand dune D. Large rocks found just offshore along shorelines