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

Explore the diverse and beautiful terrain of Pennsylvania and all of its distinctive character revealed within the detail of this relief map

or Lake Trout

Principal Draughtsman G

or Humphrey's Grasshopper

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.