
1) Area likely to have sinkholes 2) Eroded lime- stone terrain 3) German geological term 4) Karst formation 5) Limestone cavern phenomenon 6) Limestone formation 7) Limestone landscape 8) Limestone region 9) Limestone terrane 10) Limestone topography 
Found on 
https://www.crosswordclues.com/clue/karst

landscape shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite.
Found on 
http://en.wikipedia.org/wiki/Glossary_of_geology

A rocky outcrop formation usually limestone related
Found on 
http://orchidfetish.com/glossary.html

rough limestone country with underground drainage
Found on 
http://phrontistery.info/k.html

(from the article `Bosnia and Herzegovina`) ...and Radua, run in a northwest-southeast direction. The highest peak, reaching 7,828 feet (2,386 metres), is Magli, near the border with ... ...underground rivers, and the absence of surface streams and lakes. It results from the excavating effects of underground water on massive solub...
Found on 
http://www.britannica.com/eb/a-z/k/13

terrain usually characterized by barren, rocky ground, caves, sinkholes, underground rivers, and the absence of surface streams and lakes. It results ... [9 related articles]
Found on 
http://www.britannica.com/eb/a-z/k/13

Terrain with special landforms and drainage characteristics due to greater solubility of certain rocks (notably carbonate rocks such as limestone, dolomite or magnesite) in natural waters. Derived from the geographical name 'krs' from part of the karst terrain in Slovenia.
Found on 
http://www.cancaver.ca/docs/glossary.htm

Features of karst landscapes. (1) phreatic zone; (2) sinkhole or doline; (3) polje; (4) vadose region; (5) swallow holes; (6) vauclusian spring; (7) limestone pavement; (8) kamenitza A limestone topography (named after the Karst region of Slovenia), which typically includes collapsed caverns, si...
Found on 
http://www.daviddarling.info/encyclopedia/K/karst.html

Collective term for the land forms and subterranean features found in areas with relatively thin soils underlain by limestone or other soluble rocks; characterized by many sinkholes separated by steep ridges or irregular hills. Tunnels and caves formed by dissolution of the bedrock by groundwater honeycomb the subsurface. Named for the region aroun...
Found on 
http://www.encyclo.co.uk/local/22047

 A topography characterized by caves, sinkholes, disappearing streams, and underground drainage. Karst forms when groundwater dissolves pockets of limestone, dolomite, or gypsum in bedrock.
Found on 
http://www.encyclo.co.uk/local/22291

A landscape that is characterized by the features of solution weathering and erosion in the subsurfa
Found on 
http://www.encyclo.co.uk/local/22392

A geologic formation of irregular limestone deposits with sinks, underground streams, and caverns.
Found on 
http://www.encyclo.co.uk/visitor-contributions.php

A rocky outcrop formation usually limestone related
Found on 
http://www.orchidspecies.com/glossary.htm

Landform type with limestone bedrock and dominated by geomorphic features created from solution chemical weathering.
Found on 
http://www.physicalgeography.net/physgeoglos/k.html

 A type of topography formed by dissolution of rocks like limestone and gypsum that is characterized by sinkholes, caves, and subterranean passages.
Found on 
http://www.scientificpsychic.com/etc/geology-glossary.html

n. A type of topography formed by dissolution of rocks like limestone and gypsum that is characterized by sinkholes, caves, and subterranean passages.
Found on 
http://www.ucmp.berkeley.edu/glossary/gloss2geol.html

n. A type of topography formed by dissolution of rocks like limestone and gypsum that is characterized by sinkholes, caves, and subterranean passages.
Found on 
http://www.ucmp.berkeley.edu/glossary/glossary_2.html

 See under soil type and Kras Teran.
Found on 
https://glossary.wein.plus/karst

A geologic formation of irregular limestone deposits with sinks, underground streams, and caverns. 
Found on 
https://www.encyclo.co.uk/local/20094

Landscape characterized by remarkable surface and underground forms, created as a result of the action of water on permeable limestone. The feature takes its name from the Karst (meaning dry) region on the Adriatic coast of Slovenia and Croatia, but the name is applied to landscapes throughout the world, the most dramatic of which is found near the...
Found on 
https://www.encyclo.co.uk/local/21221

A landscape that develops from the action of ground water in areas of easily soluble rocks. Characterized by caves, underground drainage and sinkholes.
Found on 
https://www.encyclo.co.uk/local/22327

Areas with shallow ground water, caverns, and sinkholes.
Found on 
https://www.encyclo.co.uk/local/22548

 The term given to a distinctive landscape created by the solution and erosion of a soluble rock such as limestone. Water is an essential ingredient in the formation of the characteristic topographical features (dolines, caves, dry valleys, etc).
Found on 
https://www.encyclo.co.uk/local/23001

an area of limestone terrane characterized by sinks, ravines, and underground streams.
Found on 
https://www.infoplease.com/dictionary/karst

refers to limestone landscapes marked by bluffs, caverns and escarpments established by the dissolution of slightly acidic water coursing over soluble bedrock.
Found on 
https://www.mnn.com/earth-matters/wilderness-resources/stories/beginners-gl
  No exact match found.