Free Images - SnappyGoat.com- bestof:Pathfinder tunnel, showing boulder lodged in waterway below A gate - NARA - 294461.jpg Scope and content Photograph from Volume One of a series of photo albums

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Old mine for extraction of sand and stone

Graham Cave SP - Cave Entrance - 1998. Scanned from Kodachrome 200 slide.

Dark rectangular corridor under the bridge

Inside a cicular kiln in Mildenberg (Brandenburg, Germany).

Sewage drainage pipe, sewage flows from the collector. Environmental pollution.

A thin beam of sunlight illuminates a mysterious slot canyon. Miniature photography.

abandoned old railway tunnel used for hiking in a natural park

$The entrance to the Paw Paw Tunnel on the Chesapeake and Ohio Canal in West Virginia. The tunnel is 3,118 ft. long and was completed in the mid 1800s.\n\nThe image is also largely symbolic with a pathway leading into darkness, the great unknown of what is to come as a person starts a new beginning in life.$

View of a Salt Mine Cave next to the Salt formations in Garmsar of Iran

At Steep Rock Preserve in Connecticut, abandoned tunnel of the Shepaug Valley Railroad, finished in 1872 by miners who blasted through 235 feet of bedrock -- barely larger than the train that went through it until 1948, and now a rail trail.

Donner Pass Summit train tunnel built for the transcontinental railroad on the route where the first wagon train entered California.

Canada British Columbia, Fraser canyon highway.

View of Niagara streams from the cave of the Journey Behind The Falls experience

Long dark tunnel with small light at the end

Old underground passage, dungeon, catacombs lined with stones and slabs with paths from speleologists (spelunking)

July and August -1986, old Positive Film scanned, Enniskillen, Northern Ireland.

Independence Pass - Inside Ice Cave - 2004. Scanned from Kodachrome 64 slide.

Peering down the stone well of an abandoned farm house.

a small cave in the rock reef that call cerme cave in gunung kidul jogjakarta

Narrow dirt road and tunnels through Rocky Mountain canyon at 11 Mile Canyon in central Colorado. Nearby cities and towns are Colorado Springs, Woodland Park and Cripple Creek, Colorado in western United States of America (USA).

$Shades State Park Indiana has sandstone cliffs overlooking Sugar Creek, with many ravines and waterfalls. This park is adjacent to a better know Turkey Run State Park with similar hollows and waterfalls, but if you want less crowds, Shades is my favorite of the two. When young my Mom helped \$

Fast falling clean mountain water in a river bed.

An old abandoned mine entrance in Colorado.

Way into the underground old sewerage treatment plant tunel of the 19th century

Free Images: "bestof:Pathfinder tunnel, showing boulder lodged in waterway below A gate - NARA - 294461.jpg Scope and content Photograph from Volume One of a series of photo albums"