A group of men, women, and a few children reclining front of a rock cliff where there is a saltpetre cave. Saltpetre is used in the production of gunpowder.
Entrance to Mammoth Cave: a large hole with foliage on its far side and a rocky dirt path which curves around it at the front of the photograph. Along the rim of the cave there is an interesting tree which grows horizontally and is curved in the...
Caves; Rock formations; Historic sites; Boone, Daniel, 1734-1820
A man sits atop a large rock formation, with a boarded up entrance to a cave below. Kentucky explorer and early settler Daniel Boone spent the winter of 1769-1770 in a cave on the Shawnee River in Mercer County, Kentucky.
Group of men and children outside a cave which is boarded up but has a small door with a chain. Three young barefoot girls sit on some wooden steps leading to the cave. One of the men has some buckets and a small pitcher.
Green River near cave in Mammoth Cave Park, Kentucky. A young man in a sleeveless shirt and overalls sits in a row boat on a placid river edge; trees cover the far bank. The photograph has been touched up with paint.
An interior view of Mammoth Cave's Historic Entrance (also known as the Natural Entrance), looking outward, taken from an area inside known as the "Vestibule". Bare trees are visible through the hole.
Laborers; Trails & paths; Caves; United States. Works Progress Administration
Working on underground trail at Mammoth Cave, Kentucky. Twenty men at work lifting or inspecting the rocky ground around a cavern. In the background is a forested area.
A cave entrance on the side of a hill, possibly to Sinking Spring on the farm where Abraham Lincoln was born (see http://www.nps.gov/archive/abli/adhi/adhip3.htm). See ULPA 1982.01.819.p for a similar image of the cave entrance, and images ULPA...
A cave entrance on the side of a hill, possibly to Sinking Spring on the farm where Abraham Lincoln was born (see http://www.nps.gov/archive/abli/adhi/adhip3.htm). Also see ULPA 1982.01.723.p for a similar image of the cave entrance, and images...
