Rio Colorado Geologic 1858 Map Frame:Black That’s the spirit that underlies

That’s the spirit that underlies our map of Mammoth Cave National Park

or Humphrey's Grasshopper

A reproduction print of the Crotalus Pyrrhus

Our map depicts every river in the province—even intermittent streams—and every body of water with a diameter greater than

or Oil Shark

Rio Colorado Geologic 1858 Map Frame:Black That’s the spirit that underliesThis beautiful map was the result of an exploration under the direction of the Office of Explorations and Surveys headed by 1st. Lieut. Joseph C. Ives in 1858. The map was drawn by Frhr. F. W. v. Egloffstein, the topographer to the expedition, who used a unique engraving process that resulted in the stunning rendering of the topographic features.