A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. Courtesy of the author & The Karst Waters Institute. 2002.
Natural Tunnel State Park — Natural Tunnel The Natural Tunnel is still used as a railroad. Overview Location Natural Tunnel State Park, Scott County, Virginia, United States Coordinates … Wikipedia
Natural arch — Natural bridges redirects here. For the U.S. National Monument, see Natural Bridges National Monument. The Delicate Arch in Arches National Park in Utah, United States. A natural arch or natural bridge is a natural geological formation where a… … Wikipedia
Tunnel — This article is about underground passages. For other uses, see Tunnel (disambiguation). Underground tunnel for heatpipes between Rigshospitalet and Amagerværket in Denmark … Wikipedia
natural arch — 1. A residual portion of the roof of a subsurface karst cavity which has not collapsed. Such a natural arch may occur as a surface topographic feature, or as a part of a cave system [20]. 2. A rock arch or very short natural tunnel;… … Lexicon of Cave and Karst Terminology
tunnel — See natural tunnel … Lexicon of Cave and Karst Terminology
Tunnel du cadi — Le Tunnel du Cadi est un tunnel routier à péage situé en Espagne passant sous la Serra del Moixeró (Parc Natural del Cadí Moixeró). Il se trouve sur l axe de la C 16 qui est aussi l axe européen E9 (Toulouse Barcelone) et double la N 152. Sa… … Wikipédia en Français
Natural Bridge State Resort Park — Natural Bridge as viewed from Overlook Point Location Powell County Wolfe County … Wikipedia
Natural Bridge (Virginia) — Natural Bridge U.S. National Register of Historic Places U.S. National Historic Landmark … Wikipedia
Tunnel Creek National Park — Location Western Australia, Australia Nearest City Darwin Coordinates coord|17|36|43|S|125|08|34|E|type:landmark region:AU Area 910,000 m² Date of Establishment 1992 Governing Body Department of E … Wikipedia
Tunnel Hill State Trail — Infobox protected area | name = Tunnel Hill State Trail, Illinois, USA iucn category = V caption = Map of the U.S. state of Illinois showing the location of Tunnel Hill State Trail locator x = 182 locator y = 347 location = Johnson, Pulaski,… … Wikipedia
