Nouns denoting natural objects (not man-made)

ski slope
a snow-covered slope for skiing
 
Skagens Odde
a cape on the northernmost tip of Jutland between the Skagerrak and the Kattegatt
 
Aquila
a constellation in the Milky Way near Cygnus; contains the star Altair
 
Urubupunga Falls
a waterfall in the Parana river in Brazil
 
Ebro River
a river in northeastern Spain; flows into the Mediterranean
 
Sun River
a river in western Montana that flows south and east to join the Missouri River
 
Lake Tanganyika
the longest lake in the world in central Africa between Tanzania and Congo in the Great Rift Valley
 
tor
a prominent rock or pile of rocks on a hill
 
Ojos del Salado
a mountain in the Andes on the border between Argentina and Chile (22,572 feet high)
 
carpet
a natural object that resembles or suggests a carpet
 
Upper Tunguska
a river in southeastern Siberia that flows northwest from Lake Baikal to become a tributary of the Yenisei River
 
Grand Canyon
the enormous gorge of the Colorado River in northern Arizona
 
hornet's nest
habitation for wasps or hornets
 
bullet hole
a hole made by a bullet passing through it
 
Sun
the star that is the source of light and heat for the planets in the solar system
 
Serpens
a constellation in the equatorial region of the northern hemisphere near Ophiuchus and Corona Borealis
 
Seyhan River
a Turkish river flowing south southwest into the Mediterranean
 
stratosphere
the atmospheric layer between the troposphere and the mesosphere
 
tideland
land near the sea that is overflowed by the tide
 
Cape Fear River
a river in North Carolina that flows southeast to the Atlantic Ocean at Cape Fear
 
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