[Gutenberg 49130] • Hovey's Handbook of the Mammoth Cave of Kentucky / A Practical Guide to the Regulation Routes

No instrumental survey of the whole cave has ever been made, and no exact scale can be given. The above are some of the distances as paced along the avenues. Domes, halls and pits are relatively enlarged; and rivers and pools are blackened. The data for this new Guide map is from the earlier maps of Bogert (1814), Ward (1816), Lee (1835), Bishop (1845), Blackall (1817-pub. 1899), Forwood (1875), Hovey (1887) and Call (1897), and from written and oral information by managers and guides, modified and greatly added to by the author’s own observations during the past twenty-seven years.