Nouns denoting natural objects (not man-made)

Large Magellanic Cloud
the larger of the two Magellanic Clouds visible from the southern hemisphere
 
Great Rift Valley
( geology) a depression in southwestern Asia and eastern Africa; extends from the valley of the Jordan River to Mozambique; marked by geological faults
 
Fountain of Youth
a fountain described in folk tales as able to make people young again
 
basin
a natural depression in the surface of the land often with a lake at the bottom of it
 
Europe
the 2nd smallest continent (actually a vast peninsula of Eurasia); the British use `Europe' to refer to all of the continent except the British Isles
 
lowland
low level country
 
Garonne River
a river that rises in the Pyrenees and flows northwest to the Bay of Biscay
 
Milky Way Galaxy
the galaxy containing the solar system; consists of millions of stars that can be seen as a diffuse band of light stretching across the night sky
 
wall
a vertical (or almost vertical) smooth rock face (as of a cave or mountain)
 
Proxima Centauri
the nearest star to the sun; distance: 4.3 light years
 
thunderhead
a rounded projecting mass of a cumulus cloud with shining edges; often appears before a thunderstorm
 
Bootes
a constellation in the northern hemisphere near Ursa Major
 
Denali Fault
a major open geological fault in Alaska
 
Alaska Peninsula
a peninsula of southwestern Alaska (a continuation of the Aleutian Islands)
 
Cross-Florida Waterway
a waterway used by small boats to travel between the Atlantic Ocean and the Gulf of Mexico through Lake Okeechobee and the Caloosahatchee Canal and the Caloosahatchee River
 
geode
(mineralogy) a hollow rock or nodule with the cavity usually lined with crystals
 
strange quark
a quark with an electric charge of -1/3 and a mass 988 times that of an electron and a strangeness of -1
 
River Trent
a river in central England that flows generally northeastward to join with the Ouse River and form the Humber
 
outer planet
(astronomy) a major planet whose orbit is outside the asteroid belt (Jupiter, Saturn, Uranus, Neptune, Pluto)
 
slough
a hollow filled with mud
 
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